The ideal season for planting the crop in the main fieldis July-August or November-Decembe

100 dieters lost an average of five pounds per person during the first month, but gained an average of two pounds per person in the second month. All of the following could help explain the results of the experiment except:

A．The second month of the test occurred during a holiday season, when people are more likely to gain weight.

B．The diet drug has unpleasant side effects, causing many of the subjects to stop using the drug after the first month.

C．The pharmaceutical company provided low-calorie diets to the test subjects in the first month, but let the dieters choose their own food in the second month.

D．The pharmaceutical company selected for the test people who were 20 to 40 pounds over their ideal weights.

E．The diet drug relies on a metabolic effect that loses efficacy the longer a person takes the drug.

a wonderful place for sightseeing both for travelers from China and abroad.Facing the Bohai Sea, Tianjin possesses a semi-moist continental monsoon climate.It has four distinctive seasons and each season has its own beauty to explore.

Tianjin’s spring begins from late March to early May.It is pleasant and suitable for traveling.Taking a hike on Mount Panshan in Jixian County is a good choice in this season.Early April is also a good time for travelers to pay a visit to the ancient town of Yangliuqing.However, occasionally there may be windy days or even sandstorms.

Summer in Tianjin is usually from mid-May to the end of August when it is very hot and damp.The temperature can reach as high as 35°C.The rainy season from June to August generates 75% of the year’s total rainfall.July tends to be the wettest month in this city, but there are still lots of things to do for fun.Travelers can choose to go to the seaside or visit the biggest man-made port in China.It is located in the district of Tanggu, which is no more than one hour drive from downtown.As well, the annual Tianjin Beer Festival is held in July.

The best time to visit Tianjin is September and October, as autumn is very pleasant with a mild temperature, and it is the right time to enjoy the brilliant(灿烂的) red, yellow and green leaves on Huangyaguan Great Wall.

In November, Tianjin slowly turns to winter, and the first snow usually falls during this month.The average low and high temperatures are -2°C and 16°C, respectively.January can be rather chilly and accompanied by piercing winds at times.The maximum temperature is 6°C and it can get down to as low as -15°C.Winter in this city is very dry and windy.On sunny days, however, shopping will be an ideal choice for visitors, as the city is less crowded and attractive discounts are available.Foreigners are fond of Ancient Culture Street.There they can find a wide variety of cultural Chinese items, such as calligraphy brushes, tea pots and all kinds of traditional handicrafts.

1.What beautiful tourist attractions and natural sceneries are mentioned in the passage？

2.What time is the rainy season of Tianjin？

3.Where is the biggest man-made port in China located？

4.What is the ideal place for visitors to travel in autumn？

5.Which month is the coldest in Tianjin？ What is the lowest temperature？

nd there are long hours of sunshine. The warmth of the land heats the air above, causing it to rise and tiny drops of water to fall as rain. The rainfall can reach at least 98 inches a year. This wet, warm world with plenty of sunlight is perfect for plants to grow, so the trees grow fast with green leaves all the year round. The trees themselves also have an effect on the climate. They gather water from the soil and pass it out into the air through their leaves. The wet air then forms clouds, which hang over the tree tops like smoke. These clouds protect the forest from the daytime heat and nighttime cold of nearby deserts, keeping temperatures fit for plant growth. Rain forests slightly farther away from the equator remain just as warm, but they have a dry season of three months or more when little rain falls. Tree leaves fall during this dry season and new leaves grow when the wet season or monsoon(rainy season)begins. Thus these areas are known as the "monsoon forest". Another type of rain forest grows on tropical mountains. It is often called the "cloud forest" because clouds often hang over the trees like fog. The rain forest is the ideal place for the growth of many different trees. Most of them depend on animals to eat their fruits and spread their seeds. When the fruits are eaten, the seeds inside them go undamaged through the animals stomachs and are passed out in their droppings. The seeds lying on the forest floor then grow into new trees. Questions 19 to 21 are based on the passage you have just heard. 19. What do we know about the climate of the rain forests near the equator？ 20. What can we learn from the passage？ 21. Which plays the most important role in the spreading of seeds according to the passage？20．

A．Tree leaves are green all the time in the monsoon forest.

B．There is a dry season in the cloud forest on tropical mountains.

C．Clouds help the plants in the rain forest near the deserts to grow.

D．The formation of climate in the rain forest has little to do with the trees.

Passage Two What children need even more than presents this holiday season （节选自《华盛顿邮报》） I had barely closed the door behind the last trick-or-treater when the first signs of the holiday season began to appear. My inbox is cluttered with emails shouting helpful suggestions for purchasing, decorating and hosting. Our mailbox is ____16______ with catalogues. Holiday music ____17______my mall browsing and I spy Santas surrounded by twinkling lights and flashy garlands waiting for visitors to trickle in. The holidays are upon us, and parents often feel enormous pressure to “get it right.” We want our kids to be happy, and sometimes we feel like we must be ultra-organized, forward thinking and creative to make that happen. Many parents have fond memories of the holiday season from their childhoods. I ____18______remember time spent with family. The frantic and rushed pace of regular life would slow down, giving us time to complete 1,000-piece puzzles and play board games while snacking on tasty treats. Other memories include cozy feelings and idyllic scenes, perhaps fabricated through books and song lyrics, as I almost certainly never experienced a sleigh ride, a white Christmas or chestnuts roasting on an open fire. ____19______holiday cheer from Thanksgiving until the New Year can be difficult. Despite the joy and delight we think we should be feeling, parents in reality often feel exhausted, stressed and short-tempered. Children can go from euphoria to complete meltdowns in as little as 60 seconds. Families fly from one activity to the next while parents fret over the need to buy ideal gifts. In the rush to create picture-perfect holiday memories, we often fall into the trap of creating giant to-do lists, impossible to successfully complete. And in that shuffle, the really important things — such as time together, traditions and goodwill — get ____20______. A. accompanies B. specifically C. lost D. stuffed E. sustaining 注意：请在答题处填入相应的字母编号！字母一定要大写！

听力原文： Amsterdam, the Netherland's capital, is one of the world's best tourist destinations, where you can immerse yourself in history, in art, in the head of a beer.

Any time can be the best time to visit. The summer months are wonderful as the whole city seems to live outdoors, but it's also the peak tourist season, when hotels are full and expensive. From mid-October to mid-March the climate is miserable, but there are fewer tourists, things are cheaper and cultural life is at its most authentic. The shoulder seasons can offer the best of both worlds.

Many of the world's airlines fly directly to Amsterdam, and it is extremely convenient to fly to Amsterdam from China. But it might be cheaper for you to fly to a nearby city such as London and get to Amsterdam by bus or train. Many airlines will offer you a free side trip within Europe, so ask around and see what offers are available.

Amsterdam is well connected to the rest of Europe, including Britain, by long-distance bus. Buses are consistently cheaper than trains, but on some services you'll get a lungful of cigarette smoke. Freeways link Amsterdam to The Hague, Rotterdam. The Netherlands are very amenable to cycling —this is one of the flattest places in the world, and there are dedicated bike paths throughout the country. Amsterdam has 550,000 bicycles and this is an ideal way to get around, although you need to get used to the idea of having your bike stolen. If you're going to be around for more than a month, consider buying a second-hand bike, and make sure you buy a lock as well.

(30)

A．The whole city becomes noisy.

B．It's hard to find a cheap or vacant hotel room.

C．It is too hot then.

D．The crime rate increases.

Road Trip Vacations

It's summer. In the United States, it's the season of swimming pools, barbeques, camping and road trips.

Road trip vacations where the car journey is part of the fun are especially popular with college students, who like to explore the country on wheels. These budget trips are ideal for students who often have plenty of free time but little money.

"Ever since I went to college, I've been traveling around a lot, exploring the country," said Austin Hawkins, a 19-year-old college student from New York. This summer, Hawkins and his friends have spent weekends traveling in New England.

The best part about car trips, said Hawkins, is that you can be spontaneous (自发的). "On a road trip, if you get interested in things you see along the way you can stop and explore. "

Matt Roberts, a 20-year-old student from Ohio who drove to Montreal, Canada, agrees. "With road trips you don't have to plan in advance, you can just get into a car and drive."

Even with high gas prices, driving with friends is cheaper than flying. Roberts paid about 40 dollars for gas, but a round trip plane ticket would have cost nearly 400 dollars.

Driving trips first became popular in the 1920s. Newly paved roads and improved cars made it possible to travel longer distances. Motels started appearing outside cities.

By the 1950s, car ownership became the norm. Construction of the US interstate highway system began in 1956 and motel and restaurant chains popped up everywhere making long distance trips easier.

Today, the US has the highest car ownership rate in the world. Only 8 percent of American homes have no car, according to the most recent US census.

Though many college students don't own a car, most have access to one. On many of Hawkins' trips, they used a borrowed van.

Hawkins' most memorable road trip took place over spring break. He and two friends drove from New York to New Orleans to volunteer, helping rebuild the city after Hurricane Katrina hit it last July. They crossed the country in two days and slept in their car in church parking lots.

Roberts' road trip to Canada last winter was even more eventful. Upon arriving in Montreal, they were lost in a blizzard and shivering in the — 250 cold. To find their hotel, they turned on a laptop and drove around in circles until they found a spot with wireless Internet coverage.

"I know we should have planned better, but we're young. Now, when I see those guys I always say. 'Remember when we were lost in the snow storm!' I'll never forget that."

The word "blizzard" in paragraph 12 can be replaced by

A．snowstorm.

B．hurricane.

C．mist.

D．fog.

Road Trip Vacations

It's summer. In the United States, it's the season of swimming pools, barbeques (户外烤肉), camping and road trips.

Road trip vacations where the car journey is part of the fun are especially popular with college students, who like to explore the country on wheels. These budget trips are ideal for students who often have plenty of free time but little money.

"Ever since I went to college, I've been traveling around a lot, exploring the country," said Austin Hawkins, a 19-year-old college student from New York. This summer, Hawkins and his friends have spent weekends traveling in New England.

The best part about car trips, said Hawkins, is that you can be spontaneous. "On a road trip, if you get interested in things you see along the way you can stop and explore."

Matt Roberts, a 20-year-old student from Ohio who drove to Montreal, Canada, agrees. "With road trips you don't have to plan in advance, you can just get into a car and drive."

Even with high gas prices, driving with friends is cheaper than flying. Roberts paid about 40 dollars for gas, but a round trip plane ticket would have cost nearly 400 dollars.

Driving trips first became popular in the 1920s. Newly paved roads and improved cars made it possible to travel longer distances. Motels (汽车旅馆)started appearing outside cities.

By the 1950s, car ownership became the norm. Construction of the US interstate (洲际的) highway system began in 1956 and motel and restaurant chains popped up (突然出现) everywhere making long distance trips easier.

Today, the US has the highest car ownership rate in the world. Only 8 percent of American homes have no car, according to the most recent US census.

Though many college students don't own a car, most have access to one. On many of Hawkins' trips, they used a borrowed van.

Hawkins' most memorable road trip took place over spring break. He and two friends drove from New York to New Orleans to volunteer, helping rebuild the city after Hurricane (风暴) Katrina hit it last July. They crossed the country in two days and slept in their car in church parking lots.

Roberts' road trip to Canada last winter was even more eventful. Upon arriving in Montreal, they were lost in a blizzard and shivering in the -25° cold. To find their hotel, they turned on a laptop (笔记本电脑) and drove around in circles until they found a spot with wireless Internet coverage.

"I know we should have planned better, but we're young. Now, when I see those guys I always say: 'Remember when we were lost in the snow storm!' I'll never forget that."

Who are road trip vacations especially popular with？

A．College students who like to travel on wheels.

B．Teachers who have plenty of free time but little money.

C．Volunteers who want to help rebuild New Orleans.

D．Americans who have no cars.

It’s summer.In the United States，it’s the season of swimming pools，barbeques，camping and road trips. Road trip vacations where the car journey is part of the fun are especially popular with college students, who like to explore the country on wheels.These budget trips are ideal for students who often have plenty of free time but little money. “Ever since I went to college，Pve been traveling around a lot, exploring the country,” said Austin Hawkins, a 19-year-Old college student from New York.This summer, Hawkins and his friends have spent weekends traveling in New England. The best part about car trips，said Hawkins，is that you can be spontaneous.“On a road trip，if you get interested in tilings you see along the way you can stop and explore.” Matt Roberts, a 20-year-old student from Ohio who drove to Montreal, Canada, agrees.With road trips you don’t have to plan in advance，you can just get into a car and drive.” Even with high gas prices, driving with friends is cheaper than flying.Roberts paid about 40 dollars for gas, but a round trip plane ticket would have cost nearly 400 dollars. Driving trips first became popular in the 1920s.Newly paved roads and improved cars made it possible to travel longer distances.Motels started appearing outside cities. By the 1950s, car ownership became the norm.Construction of the US interstate highway system began in 1956 and motel and restaurant chains popped up everywhere making long distance trips easier. Today, the US has the highest car ownership rate in the world.Only 8 percent of American homes have no car, according to the most recent US census. Though many college students don’t own a car, most have access to one.On many of Hawkins’trips, they used a borrowed van. Hawkins’most memorable road trip took place over spring break.He and two friends drove from New York to New Orleans to volunteer, helping rebuild the city after Hurricane Katrina hit it last July.They crossed the country in two days and slept in their car in church parking lots. Roberts？ road trip to Canada last winter was even more eventful.Upon arriving in Montreal, they were lost in a blizzard and shivering in the -25°cold.To find their hotel, they turned on a laptop and drove around in circles until they found a spot with wireless Internet coverage. “I know we should have planned better, but we’re youn

A.Now, when I see those guys I always say：‘Remember when we were lost in the snow storm!’I’ll never forget that.” Which of the following statements is NOT true of American college students？

B.They have little money

C.They like traveling by bike.

D.They like to explore the country.D.They often have plenty of time.

What will Hawkins do when he sees something interesting on a road trip？

A.He will turn back

B.He will drive around.

C.He will stop to explor

D.He will stop exploring.

When did motels suddenly appear everywhere？A.After the work to build the interstate highway system started.

B.When driving trips became popular.

C.After many roads were paved.

D.After new cars were made.

Which of the following words can best describe Hawkins？ trip to New Orleans？A.Eventful

B.Colourful.

C.Delightful

D.Unforgettable.

The word“blizzard”in paragraph 12 means_________.A.snow storm

B.hurricane

C.mist

D.fog

请帮忙给出每个问题的正确答案和分析，谢谢！

al in many processes; it is essential for cooling machinery; it provides steam for engines which consume coal and it is one of the most important sources of power.

As a source of power, water is virtually inexhaustible. Its power is ultimately derived from the force of gravity and from the sun. It is the sun's energy that warms the sea and the land and causes water to evaporate into the air; later the moisture in the air condenses and falls in the form. of rain or snow. Much of the water that falls on the land flows back to the sea. The downward flow of the water exerts considerable pressure, and it is at this point in the water cycle that we can capture some of its power.

The earliest method of exploiting this power was to make water turn a wheel. This system in which the force of water was used directly, had one great disadvantage. Factories which used it had to be built on the banks of fast flowing streams, but these were often located in inaccessible, thinly populated areas, which made transportation of goods difficult.

When the steam engine was invented, it soon replaced flowing water as a source of power, new factories sprang up in the coal fields. Coal and oil—reserve of power also ultimately derived from the sun—are not always found in accessible places, but they have the advantage of being portable.

In the 20th century the situation changed and water once more became a vital source of power. Methods were devised for producing electricity from the energy of rivers. Once the initial capital has been recovered, electricity from this source is usually cheaper than oil and coal, which are expensive to extract and transport. The great advantage of hydroelectric power is that nature constantly renews the water that provides the power. Coal and oil are fuels that can only be used once.

Not all rivers are ideal for generating electricity. A suitable river must have an adequate flow of water, and ideally there should be a steep fall. A steep waterfall is ideal, because it concentrates the energy of gravity into a short distance. The amount of water in the river, moreover, should not vary too much from season to season. This means that there must be adequate rainfall throughout the year. The river must be fairly near the industrial centers which will utilize its power, for the greater the distance the electricity has to travel, the more power is wasted.

Waterfalls can be constructed or enlarged by engineers. This is done by altering the slope or level of rivers at certain places, in order to concentrate a heavy fall of water at a chosen location. An artificial waterfall thus obtained is usually regulated by a dam. Projects of this kind, harnessing the flow of rivers are in process of construction in Egypt, Australia, and many other countries.

Japan is a country that relies on hydroelectric power. Her available coal resources proved inadequate for her industrial development and she was obliged to import fuel to drive machinery. But Japan is a mountainous country with abundant rainfall and a dense concentration of population, she has developed her resources of hydroelectricity to a greater extent than other Asian countries.

Which statement is NOT true according to the passage？

A．when the steam engine was invented, it soon replaced water as a source of power, so water was useless for a certain period

B．Factories could be built far from coal fields, because coal is portable

C．It was convenient to build a factory in the coal fields

D．Japan is a country that relies on hydroelectric power

Road Trip Vacations

It's summer. In the United States, it's the season of swimming pools, barbeques (户外烤肉), camping and road trips.

Road trip vacations where the car journey is part of the fun are especially popular with college students, who like to explore the country on wheels. These budget trips are ideal for students who often have plenty of free time but little money.

"Ever since I went to college, I've been traveling around a lot, exploring the country," said Austin Hawkins, a 19-year-old college student from New York. This summer, Hawkins and his friends have spent weekends traveling in New England.

The best part about car trips, said Hawkins, is that you can be spontaneous. "On a road trip, if you get interested in things you see along the way you can stop and explore."

Matt Roberts, a 20-year-old student from Ohio who drove to Montreal, Canada, agrees. "With road trips you don't have to plan in advance, you can just get into a car and drive."

Even with high gas prices, driving with friends is cheaper than flying. Roberts paid about 40 dollars for gas, but a round trip plane ticket would have cost nearly 400 dollars.

Driving trips first became popular in the 1920s. Newly paved roads and improved cars made it possible to travel longer distances. Motels (汽车旅馆)started appearing outside cities.

By the 1950s, car ownership became the norm. Construction of the US interstate (洲际的) highway system began in 1956 and motel and restaurant chains popped up (突然出现) everywhere making long distance trips easier.

Today, the US has the highest car ownership rate in the world. Only 8 percent of American homes have no car, according to the most recent US census.

Though many college students don't own a car, most have access to one. On many of Hawkins' trips, they used a borrowed van.

Hawkins' most memorable road trip took place over spring break. He and two friends drove from New York to New Orleans to volunteer, helping rebuild the city after Hurricane (风暴) Katrina hit it last July. They crossed the country in two days and slept in their car in church parking lots.

Roberts' road trip to Canada last winter was even more eventful. Upon arriving in Montreal, they were lost in a blizzard and shivering in the -25° cold. To find their hotel, they turned on a laptop (笔记本电脑) and drove around in circles until they found a spot with wireless Internet coverage.

"I know we should have planned better, but we're young. Now, when I see those guys I always say: 'Remember when we were lost in the snow storm!' I'll never forget that."

Who are road trip vacations especially popular with？

A．College students who like to travel on wheels.

B．Teachers who have plenty of free time but little money.

C．Volunteers who want to help rebuild New Orleans.

D．Americans who have no cars.