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用所给单词的适当形式填空
1.—Whose dress is this?
—It’s ____ (I).
2. This bike isn’t Mary’s. ____ (she) is over there (在那边).
3.Are those ____ (you) apples?
4. These are our oranges. Those are ____ (their).
5. Mr. Gao is ____ (he) teacher.
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Reading is an activity that people enjoy a lot in their free time.
Some like reading newspapers and 【小题1】 enjoy novels or comic books. My 【小题2】 books are those about the lives of great people. Reading them always 【小题3】 me a lot of ideas on how to make my own life better.
Great people are remembered not 【小题4】 they were handsome or beautiful, but because they did not give up 【小题5】 their lives were difficult. They tried to use every chance to change their lives and make the world better.
One good example is Orville and Wilbur Wright, the two brothers who invented the 【小题6】. The plane has made the world into a small village. Hard work, not good luck, is the 【小题7】 why the Wright brothers could 【小题8】 this convenient machine and become great people. Today we will remember them when we see planes 【小题9】 the sky.
Whenever I read stories about great people, I always 【小题10】 a lot from them and they encourage me to move forward.
This is why I enjoy reading about great people’s lives. 查看习题详情和答案>>
The nose is important for everyone. It can help a person breathe and smell. In fact,it can also be used in many popular expressions.
Some people can lead other people by the nose. For example, if a wife leads her husband by the nose, she can ask him to do whatever she wants him to do.
Some people are said to be hard--nosed. They will not change their opinions of anything.
If some people keep their noses out of other people’s business, they do not interfere
( ) in anything that has nothing to do with them. The opposite kind of people are those who nose around all the time. They are interested in other people’s personal life.
If someone works hard, he can keep his nose clean or stay out of trouble. How ever, more problems will be caused if a person looks down his nose at others or some things. He thinks they are unimportant. This kind of person might also turn up his nose at anything that he doesn’t consider good enough. He thinks he is better than anyone else.
At school, some students thumb their noses at their teacher. They refuse to follow what their teacher says or do any work. Of course, it is not right for students to do like this.
根据材料内容,从下面方框中选出恰当的短语完成下面五个小题,使句子通顺、意思完整。每个短语限用一次。
A. be hard—nosed B. nose around C. keep his nose clean D. turns up his nose E. thumb their noses |
1. I don’t want to make friends with David because he always
2. Maggie likes to talk about others and
3.My brother used to , but now he can listen to others’ advice.
4. Bob and Andy usually at their parents.
5.Michael works hard all the time, so he can
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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.
小题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 |
A.变形的 | B.防水的 | C.太阳灼伤的 | D.表皮破损的 |
A.as flexible as | B.not so flexible as |
C.more important than | D.less important than |
A.To protect the plant. | B.To provide support. |
C.To move chemicals and wastes. | D.To control the water. |