《2025年通城学典课时作业本八年级英语上册译林版南通专版》

一、用括号中所给词的适当形式填空。
1. My bike is broken. I'm uncertain (certain) about where to fix it.
2. We had to travel a long way to the seaside to watch (watch) the beautiful sunrise.
3. It's against the law for everyone to drive (drive) a car after drinking.
4. The little boy got (get) hurt when he fell off his bike, but he is feeling better now.

答案： 1. uncertain 2. to watch 3. to drive 4. got

1. Tortoises can ______ 150 years old or more, making them one of the longest - living animals.C
A.live by
B.live out
C.live up to
D.live off

答案： C

2. The Artic ice is melting. This makes ______ more difficult for polar bears ______.D
A.it; surviving
B.that; to survive
C.that; surviving
D.it; to survive

答案： D

3. — Mum, how many sandwiches do we have? — ______ You'd better get some by yourself.C
A.Nothing.
B.Nobody.
C.None.
D.No one.

答案： C

4. — Nantong is really a nice place, isn't it? — Yes, ______ visitors come here every spring.A
A.thousands of
B.thousand of
C.ten thousands
D.ten thousand of

答案： A

三、句子翻译。
1. 政府阻止人们砍伐森林。 The government stops people from cutting down forests.
2. 我们不应该以任何理由捕杀老虎。 We should not hunt tigers for any reason.
3. 我每天都能听到鸟儿在树上歌唱。 I can hear the birds sing in the trees every day.
4. 由于狩猎,许多野生动物处于危险之中。 Many wild animals are in danger because of hunting.
5. 当我们把土地占为己用时,野生动物可能会失去家园。 When we take land for our own use, wild animals may lose their homes.

答案： 1. The government stops people from cutting down forests. 2. We should not hunt tigers for any reason. 3. I can hear the birds sing in the trees every day. 4. Many wild animals are in danger because of hunting. 5. When we take land for our own use, wild animals may lose their homes.

四、阅读理解。
Do you know how birds keep warm in winter? People used to think they keep warm by shaking and using their feathers as our woollen clothes. Few people would think heat might come from inside birds.
This year, researchers(研究员) at Lund University in Sweden have found that birds' blood produces(产生) more heat in winter. The secret is the energy factories of cells, the mitochondria (线粒体). Many animals have no mitochondria in their red blood cells(红细胞), but birds do. "In winter, instead of producing more energy, the mitochondria seem to produce more heat," says Andreas Nord, the study researcher at Lund University.
Then how do the mitochondria work? The researchers studied different birds in two different seasons: early autumn and late winter. They took blood samples(样本) from the birds and got the red blood cells. By using a scientific tool, the researchers then were able to know how much oxygen(氧气) was spent on producing energy, and how much on heat. Finally, they also got the amount of mitochondria in each blood sample.
The results are as follows. The blood samples taken in winter had more mitochondria. What's more, the mitochondria worked harder at that time. However, the work was not to produce more energy but heat. The researchers had no idea that the birds could change their blood as a heating system in this way, so they were surprised.
Now the researchers are doing more studies, hoping to find out whether the food that the birds eat in winter affects the mitochondria.
1. Which of the following statements about the mitochondria is true?
A. The mitochondria work much harder in autumn.
B. The mitochondria produce more heat in autumn.
C. Many animals have them in their red blood cells.
D. Birds have the mitochondria to keep warm in winter.
2. Which is the correct order about how the researchers did the study?
a. They found how much oxygen was spent.
b. They got the red blood cells from the samples.
c. They got the amount of mitochondria!
d. They took blood samples from the birds.
A. d - b - c - a
B. d - b - a - c
C. d - a - b - c
D. a - d - b - c
3. What's the best title for the passage?
A. The mitochondria are very useful
B. Blood helps birds keep warm in winter
C. We should protect our friends—birds
D. Researchers did a successful study

答案： 1. D 2. B 3. B