a dog. We do not know name. [ ]A. It is, its B. Its, it is C. It is, It is D. It is, is 题目和参考答案——青夏教育精英家教网—

题目内容

______ a dog. We do not know ______ name.

[ ]

A.  It is, its
B. Its, it is
C. It is, It is
D.  It is, is

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My name is woof. You think that we have a great life，right？Wrong！I am going to tell you why.
First of all，we are bored. Bored. bored. And bored. Do you ever think about what a dog does all day？ Nothing. Nothing at all. Our owners are busy，you know，working，going to school，away from home all day. So what are we supposed to do？Watch the house or apartment？Sure. That is like watching paint dry or grass grow. Boring. That’s why we get so excited when our owners come home. We bark and run around and act as if we are very happy. But we only do this because we are bored all day. If we are lucky，our owner take us for a walk.
Then there is the food. We eat the same food，meal after meal，day after day，week after week，month after month. Help！Would you like to eat the same thing all the time？No，you would not. So what makes you think we dogs like it？We don’t. We hate it.
Another thing-television. Another thing-television. Dogs hate television. Our owners watch these stupid programs，hour after hour，night after night. Are there any programs for dogs on television？No. Not a single one.
So what can we do？What else can we do but sleep？And so we sleep. We dogs are not lazy，we are bored.
【小题1】Woof may be a .

【小题2】From the passage，we know that Woof .

A．lives a great life	B．is busy every day
C．likes the food very much	D．hates watching television

【小题3】How many points does Woof complain about？

It may seem easy to say that plants and animals are different. Any child can tell the difference between a tree and a dog. But those differences are far deeper than just what they look like. The cells (细胞) that plants are made up of are different. In other words, the cell wall of plants has something special.

First of all, it's important to find that not all plant cells have a cell wall. Besides, there are many differences of a cell wall based on the kinds of plant. The following is meant to be what a plant cell wall is like.

The cell wall of a plant is on the outside of the cell membrane (膜). It is usually hard and cannot be bent easily, but the degree of flexibility (韧性) of the cell wall is different. It is based on the special use that the cell has in keeping the plant alive. Cells that make up the trunk of a tree are clearly less flexible than? cells on a leaf.

Cell walls act in many ways. They serve to protect the plant. They provide support, as well as help in the movement of chemicals and wastes into and out of the cell. More importantly, they control the water? that goes in and out. Plants must have good water controlling systems (系统), allowing them to keep water during dry seasons, and get rid of unnecessary water. Plants can't walk around to find water, so being able to control water is very important.

So there you have it , what a plant cell wall is. Of course, there are many other things that are not talked about here. Knowing more about plant cell wails requires further study and research.

1.From the first two paragraphs we can find that _____.

A. all plants have a ceil wall?????????????

B. plant cells and animal cells are the same

C. different kinds of plant have different cell walls

D. there are no differences between the cells of a tree and a dog

2.The underlined word "bent" in the passage is the closest in meaning to _____.

A. 变形的 ?? B. 防水的 ? C. 太阳灼伤的 ??? D. 表皮破损的

3.Cells in the trunk of a tree are _____ those on a leaf.

A. as flexible as ????????? B. not so flexible as

C. more important than ?? D. less important than

4.What is the most important use of a plant cell wall?

A. To protect the plant. ???? B. To provide support.

C. To move chemicals and wastes. D. To control the water.

阅读短文，根据短文内容补全所给的五个残缺的句子。每空只能填一词。

We often see many animals. But do you know how these animals say things?

Let’s see a rabbit. When a rabbit sees something dangerous, it runs away at once. When it runs, its tail moves up and down. When others see this, they runs quickly ,too. Many other animals use this kind of language. When a bee finds some food, it goes back to its home. It can’t tell the other bees where the food is by speaking to them, but it can dance. This may tell the other bees where the food is .

Some animals say things by making sounds like man does. For example, a dog barks when a stranger comes close. Some birds can make several different sounds, each sound has its own meaning. In a word, every animal has its own language.

1.When a rabbit sees _____________ dangerous, it runs away at once.

2.The rabbit move their __________ to tell others when they are in danger.

3.The bees ______________ to tell the other bees where the food is.

4.Some animals can ____________ things by making sounds like man does.

5.When a stranger comes ______________ to the house, a dog barks.

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