题目内容
—Look! The lights in the teachers’ office are still on. Is Mr. Li working?
—No. It _______ be Mr. Li. I saw him leave just now.
A．may not B．mustn’t C．can’t D．needn’t
C
教材全解字词句篇系列答案We need some vegetables . The vegetables in the supermarket are very good . We buy some tomatoes, carrots and broccoli . I don’t like broccoli, but my parents like it . I like carrots very much. We buy lots of carrots. After shopping , mother and I have some French fries, milk and ice cream. And then we go back home with the fruit and vegetables .
【小题1】Who like apples very much ?
| A．Mother | B．Father | C．I | D．I don’t know |
| A．there are not any bananas | B．the bananas are green |
| C．She doesn’t like bananas | D．I don’t like bananas |
| A．herself | B．father | C．us | D．me |
| A．tomatoes | B．strawberries | C．carrots | D．broccoli |
| A．we go back home | B．we eat some apples and tomatoes |
| C．we have some food | D．we only have some ice cream |
| A．at; at | B．/; of | C．of; of | D．at; of |
My name is Jenny. I 1 a sister. Her name is Katty.
It is 2 November5th.it’s her birthday .She is thirteen, 3 she likes cakes (蛋糕) very much, my father and mother 4 her a big cake. Look! The cake is 5 the table of her room. It’s her nice cake. You can see her 6 on it. There are 7 things for her birthday.
8 are apples, oranges, bananas and some CDs. I 9 her a new book. Her good 10 Kelsey, Jane and Sally are coming (要来) . She likes to eat the birthday cake with (和) her friends.
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DNA is the whole “map” of the human body. It is something that all humans have, and it tells the body what to do. DNA is the reason that we look like our parents, because we get some of their DNA to make our own.
People have been trying to understand the human body for a long time, In1860, Mr Mendel discovered why we look the same as other people in our family. It is because of small things called “genes”(基因) in our body. In 1953, two scientists, Watson and Crick, found out that those small parts are really messages . They’re written in the DNA with a special language.
In1961, another two scientists found the first “word” that they could understand in that language. It shows how DNA tells the cell﹙细胞﹚to build its parts. So far, scientists have found all the words in the DNA map, but we still do not understand what they all do. By understanding what just one “word ”means, we can help to save people from several illness. So the more we understand, the more doctors will be able to do.
Most people hope that this will help to make better medicine and help sick people. Other people worry that when we learn more “words” and find out more information, we will use it in the wrong way, just to make people more attractive (有吸引力的)，or stop sick people getting jobs.
【小题1】When did Mr Mendel discover why we look the same as other people in our family?
A. In 2000. B. In 1961 C. In 1953 D In 1860
【小题2】What did the two scientists find in 1961? They found_____.
| A．all the words in the DNA map |
| B．Small things called “genes” in our body |
| C．The first “word” they could understand in that language |
| D．those small parts are written in the DNA with a special language |
| A．Make better medicine. | B．Make them get jobs. |
| C．Make maps for them. | D．Make them attractive |
| A．We look like our parents because of “genes” in our body |
| B．We have understand what all the words in the DNA map do |
| C．DNA is the whole “map” of the human body. |
| D．DNA tells the cell to build its parts. |
| A．It can be only bad | B．It can be only good |
| C．It can be good but won’t work | D．It can be good and bad |