Think of ________ a small child does when he begins to learn his mother tongue.

ce的来信写一封至少100词的回信) （注意：短文中不得出现考生的中文姓名及其他相关信息，否则不予评分。）

t cities are located(坐落) on rivers, and almost every country has at least one river running through it that plays an important role in the lives of its people.

Since the beginning of the history, people have used rivers for transportation(运输). The longest one in the United States is the Mississippi. The lifeline of Egypt is the Nile. To the people of India, the Gangs is great, but it is also important for transportation; Ships can travel along it for a thousand miles. Other great rivers are the Congo in Africa and the Mekong in southeast Asia. The greatest of all for navigation (航海), however, is the Amazon in Brazil. It is so wide and so deep that large ships can go about two thousand miles upon it.

Besides transportation, rivers give food, water to drink, water for crops(庄稼), and chances for fun and entertainment for the people who live along their banks. In order to increase(增加) the supply of crops, engineers sometimes build a dam (大坝) across a river and let a lake from behind the dam. Then people can use the water not only to irrigate (灌溉) their fields but also to make electricity for their homes and industries.

However, large cities and industries that are located upon rivers often make problems. As the cities grow in size and industries increase in number, the water in the rivers becomes polluted with chemicals(化学物质) and other materials. People are learning the importance, however, of doing more to keep their rivers clean if they want to enjoy the benefits (利益) of this natural resource.

The greatest river for navigation is ___________.

A.the Amazon

B.the Nile

C.the Mekong

D.the Mississippi

From a dam, people can use the water for ___________.A.keeping the rivers clean

B.only making electricity

C.washing clothes

D.irrigation and making electricity

The water in the river is polluted because of _____________.A.people's drinking water too much

B.people's swimming in the river too much

C.chemicals and other materials

D.people's building a dam across a river

The best title of the passage is ___________.A.Rivers in Cities

B.The importance of Rivers

C.Transportation

D.Natural Resources

请帮忙给出每个问题的正确答案和分析，谢谢！

ere warming up their cars, Trevor, my husband, had to get up early to ride his bike four kilometers away from home to work. On arrival, he parked his bike outside the back door as he usually does. After putting in 10 hours of work, he returned to find his bike gone.

The bike, a black Kona 18 speed, was our only transport. Trevor used it to get to work, putting in 60-hour weeks to support his young family. And the bike was also used to get groceries（食品杂货），saving us from having to walk long distances from where we live.

I was so sad that someone would steal our bike that I wrote to the newspaper and told them our story. Shortly after that, several people in our city offered to help. One wonderful stranger even bought a bike, then called my husband to pick it up. Once again my husband had a way to get to and from his job. It really is an honor that a complete stranger(陌生人) would go out of their way for someone they have never met before.

People say that a smile can be passed from one person to another, but acts of kindness from strangers are even more so. This experience has had a spreading effect in our lives because it made our confidence in humanity（人性）stronger as a whole. And it has also influenced us to be more mindful(在意的) of ways we can share with others. No matter how big or how small, an act of kindness shows that someone cares. And the results can be continuing forever.

Why was the bike so important to the couple?

A.They used it for work and daily life

B.It was borrowed from their friend

C.It was a nice Kona 18 speed

D.The man&39;s job was bike racing

We can learn from the text that ________.A.the couple worked 60 hours a week

B.people were busy before Christmas

C.the stranger brought only the bike

D.life was hard for the young family.

How did people get to know the couple's problem?A.From radio broadcasts.

B.From a newspaper.

C.From TV news.

D.From a stranger.

What do the couple learn from their experience?A.Strangers are usually of little help.

B.One should take care of their bike

C.News reports make people famous.

D.An act of kindness can mean a lot.

请帮忙给出每个问题的正确答案和分析，谢谢！

hen something terrible happens, we make it known to others soon. But can you imagine that a tree can talk and share news too? Of course, no tree moves lips and says words just as people do. Strange as it may sound, though, some trees do manage to communicate with each other.

Willow(柳树) trees are the best-known of these trees. When insects begin nibbling(叮咬) a willow tree, the tree sends out a special smell at once. This smell tells the other willows that harmful insects are coming near. All of them quickly make a chemical(化学物质) in their leaves. This chemical is bad to the insects. The insects do not like it and they fly away soon. In this way, the willow trees protect themselves from the insects.

The next time when you take a walk in the woods, maybe the trees are “talking” to each other quietly. And when someone says that trees cannot “talk”, please tell them that even trees give messages to each other, too.

Willow trees send messages with _________.

A.words

B.movements

C.smells

D.sounds

The underlined word “lips” in the first paragraph means ________.A.树干

B.嘴唇

C.枝条

D.手势

The passage tells us that some of the trees can ________.A.speak just as people do

B.tell stories to others

C.communicate with each other

D.kill insects in the woods

According to the passage, the right order of the following is ________. a、 The willow tree gives out a smell. b、 The willow trees make a chemical in their leaves. c、 Insects fly away because of the chemical. d、 Insects begin nibbling a willow treeA.d-a-b-c

B.d-b-a-c

C.a-b-c-d

D.d-c-b-a

请帮忙给出每个问题的正确答案和分析，谢谢！

Tom Sawyer let his friends _______ a long fence by playing a trick one afternoon.

A.paint

B.to paint

C.painting

D.to painting

There are three English-books on the shelf, but ______ of them is mine

A.both

B.neither

C.all

D.none

The manager asked him if he ________for the extra work the next weekend

A.had come

B.will come

C.would come

D.came

The meat with eggs tastes ______. Would you like some more?

A.well

B.nice

C.bad

D.wonderfully

________ enjoyable the journey was! We really had a great time

A.What

B.What a

C.What an

D.How

在下面每组单词中，有一个单词的划线部分与其它单词的划线部分的读音不同。找出这个词。

A.live

B.rise

C.fine

D.smile