下面的代码输出结果是： s =["sea","tree","flower","leaf","grass","sky"] print（s[1:4:3])

A. wheat straw.

B. bamboo

C. bark

D. cork tree

E. sunflower seed:

F. grass

The floor of the office is made of bark from

Spring is a 11 season. The temperatures are mild, and the blooming trees and flowers make the city bright 12 This is the time when we can begin to wear lighter and more brightly colored clothes and go 13 more often. Small children like to bring their kites out to squares in the city and field in the suburb. Also, this is the season for the grave(墓穴、坟墓) cleaning day when we go to 14 our past generations. I enjoy going back to the village on this 15 after being in the city for the winter months. 请在____11______处填上答案。

Most tangerine trees and their flowers and fruits resemble ______ the orange, although tangerines are generally smaller.

A．of those

B．which of those

C．those of

D．which are of

Most tangerine trees and their flowers and fruits resemble ______ the orange, although tangerines are generally smaller.

A．of those

B．which of those

C．those of

D．which are of

When spring comes, the trees are ______.

A．in a flower

B．in flowers

C．in the flower

D．in flower

The banana "tree" is actually not a real tree. This is because there is no wood in the stem(树干) rising above the ground. The stem is made up of leaves growing very close together, one inside the other. The leaves spread out at the top of the stem and rise in the air.

Banana plants need a lot of care and attention. They must be provided with water if the normal rainfall doesn't supply enough. The area around the plants must be kept free of weeds and grass.

About nine or ten months after planting, a flower appears on the banana plant. This flower is at the end of a long stalk(茎), which grows from the base up through the center of the stem and turns downward when it comes out from the top. Small bananas form. on this flower stalk as it grows down- ward. Bananas really grow upside down. As the small bananas form. on the stalk, they point down- ward, but as they grow they mm and point upward.

Bananas are harvested while they are still green. Even when they are to be eaten where they are grown, they are not allowed to ripen on the plant. A banana that turns yellow on the plant loses its taste.

The first paragraph in the text mainly discusses ______.

A．why the banana tree is not a tree

B．how the banana grows on the stem

C．why the stem of the tree is wood

D．how the leaves grow out of the stem

The flowers need to be watered.

The flowers need______ .

根据下面内容，回答题：

Have you ever heard of a flower whose seeds are carried and spread by elephants? The rafflesia， a rare blossom， is very unusual. Found in the rain forests of Sumatra， the rafflesia is the world"s largest flower， measuring three feet in diameter!

This giant flower is a parasite——it needs another plant to live on. It lacks the structures needed to survive alone， The rafflesia has no stem or leaves. It is all flower. It attaches itself to the roots of other plants and sucks their juices. The flower"s favorite home is the root of the vine， which grows above ground.

The rafflesia seems to burst right out of the forest floor. Its blossom weighs fifteen pounds ! It has thick， spotted petals that give off a rotten smell. The center is about the size of a household bucket.

After a rain， it may hold up to twelve pints of water!

After the rafflesia dies， it becomes a pool of thick liquid in which its seeds float. Elephants wandering through the forest step into the mushy pool， and the seeds glue themselves to their feet. As the animals stomp through the forest， their sticky feet pick up twigs and leaves. The elephants try to rid themselves of the sticky mess， in the same way people try to get bubble gum off their shoes. The elephants rub their feet against the roots of the vine. In no time， seeds left on the vine grow into more monstrous flowers !

Elephants help to________. 查看材料

A.provide food for the giant flower

B.water the rafflesia with their trunks

C.carry rafflesia seeds from one place to another

D.stomp out the awful smelling petals

6. Easter It’s Easter in the UK and the shops are full of Easter eggs, hot-cross buns and Easter bunnies. Easter is a holiday celebrated in early spring. The date of the festival is not fixed. It is celebrated on the first Sunday of a full moon day after March 21. It usually falls between March 21 and April 25. It started as a Christian holiday, created by the early Christians to celebrate the rebirth of Jesus from the dead. It is a religious holiday celebrated by Christians, but non-religious people often mark the day, too. Over time it became a holiday meant to celebrate spring and the rebirth of the earth after a long, cold winter. Symbols of Easter are eggs, rabbits, lambs, flowers, especially tulips and the religious symbols of the cross, and the virgin Mary. Children around the world have fun on Easter by painting eggs, hunting for chocolate eggs, making rabbit and flower crafts and enjoying a delicious lamb dinner. Although Easter is widely seen as a Christian festival which celebrates the resurrection of Jesus, its origins pre-date Christianity and many of its symbols come from the earliest civilizations. Our modern festival’s roots lie in ancient seasonal rituals which marked the transition from the "death" of winter to the new life and rebirth of spring. These days we give chocolate eggs as gifts at Easter but eggs have been symbols of fertility for thousands of years. The ancient Persians gave each other painted eggs for the festival of Nowrooz, a celebration held at the spring equinox which marked the start of Persian New Year. The tradition continues to this day. Centuries ago, the early Saxon people marked buns with a cross to honour their goddess Eostre, whose name some people believe to be the origin of the word Easter. It is believed that early Christians incorporated such pagan festivals into their religion. Some experts say the Easter bunny was originally a hare as this animal represented fertility and growth in pagan mythology due to its capacity for reproduction. Moreover, in some ancient cultures the hare was also a symbol of the moon, which is significant as the date of Easter changes each year depending on the lunar cycle. The Easter bunny has become an important symbol of Easter all over the world. But nowadays not everybody treats such symbols with respect. Pranksters in the Austrian town of Villach have stolen a giant Easter Bunny from the town square. Local police say it should not be too difficult to spot as it is two meters tall and weighs 60kg. 11. Why is the bunny regarded as an important symbol of Easter according to the passage?

A、It is notable for its capacity of abundant production.

B、Because it is born only in spring.

C、Because it is the symbol of love.

D、It is notable for their cleverness and loveliness.