《2025年海淀单元测试AB卷八年级英语下册外研版》

Passage 17
be,change,hard,easy,bird,problem,end,develop,get,noise,high,offer
Nature is wonderful. It 1. ________ our best teacher. It teaches us a lot and we are born to learn from it to solve 2. ________. For example, scientists used what they saw in nature to improve our way of travelling. In days of high - speed train research and 3. ________, scientists were once faced with a noise problem. The trains pushed air through tunnels at 4. ________ speed. So, when a train came out of a tunnel, it could be very, very 5. ________. However, kingfisher birds hardly make a sound when they get into lakes or rivers. Engineers 6. ________ a clever idea. They changed the front of the trains to match the shape of the kingfisher. Then the air could 7. ________ pass over the trains. The problem was solved!
The kingfisher 8. ________ example is just one that we learnt from nature. Scientists study the smart models that nature can 9. ________. Then they use their wisdom(智慧) and imagination to design new products. Nature provides us with 10. ________ possibilities to find wonderful ways to improve our lives. Learning from nature knows no bounds(永无止境)!

答案： Passage 17)
1. is 2. problems 3. development 4. high 5. noisy
6. got 7. easily 8. bird's/birds' 9. offer 10. endless

Passage 18
if,I,excite,accept,afford,the,pay,bookshop,pick,from,few,lucky
When I was in primary school, I fell in love with reading. The books brought a wonderful world to 1. ________. The more I read, the more I wanted to know. However, my parents could not 2. ________ so many books. I had to solve the problem myself.
There was a 3. ________ near my home. One day I walked into the bookshop and 4. ________ up a book. I didn't know whether I could read there without buying any books. To make sure, I just read a 5. ________ pages and then put it back. 6. ________, no one noticed me. After that, I went there to read every day. Several days later, while I was reading, the owner came up and asked, “You like reading?” I looked down and replied nervously, “Yes.” “Don't worry,” he said with a smile. “You may read books here 7. ________ you help me clean the shop.” I felt quite 8. ________, “Wow! It's so kind of you!” From then on, I spent a little time cleaning the shop. After that, I quietly read there. Finally, I became one of 9. ________ best writers in our school.
Now studying in high school, I can borrow books 10. ________ the library. My hobby of reading is kept. It will make a big difference to my life.

答案： Passage 18)
1. me 2. afford 3. bookshop 4. picked 5. few
6. Luckily 7. if 8. excited 9. the 10. from

Passage 19
other,terrible,like,well,develop,way,away,be,simple,but,watch,though
Sometimes, we are down, tired or unhappy. That's OK. Even if sadness is part of life, let's try to make it small. Here are a few 1. ________ to help you feel better when you are feeling sad.
Smile. It's easy to do and it has good results. This way can not only leave you in a good mood but also bring 2. ________ a good mood.
Listen to music. It can 3. ________ your favourite music. Maybe some kinds of music work well for you, but try to find out what kind of music works the 4. ________ for you.
Take some “me” time. You can find pleasure in reading a book, 5. ________ the sunrise(日出) or taking a hot shower, or something 6. ________ that.
Exercise. Taking a walk will make you full of energy. It is a 7. ________ but great way to clear your mind of anything that makes you sad. These ways will cheer you up when you are down, 8. ________ don't just use them when you are sad. Try and practise them every day to 9. ________ a habit. You will be surprised that these simple ways will keep your sadness 10. ________. However, if you are in a deep depression(沮丧), see a doctor.

答案： Passage 19)
1. ways 2. others 3. be 4. best 5. watching 6. like
7. simple 8. but 9. develop 10. away

Passage 20
actual,advantage,chance,child,difficult,few,difference,hear,many,possible,silence,tell
Do you believe a rose plant says “I want some water” or that a tree shouts “My arms hurt”? Maybe you will say this could only happen in some 1. ________ stories.
In fact, plants are not always 2. ________. A recent study has found plants shout when they are in need of water or having their stems cut. “Even in a quiet field, there are 3. ________ some sounds that carry information. However, the pitch(音高) is too high for people 4. ________,” said Lilach Hadany, a professor from Tel Aviv University.
The researchers used microphones to record some tomato plants and found that stressed plants send out 5. ________ sounds than unstressed plants. “When tomatoes are not stressed at all, they are very quiet,” Professor Hadany said. They also trained a machine in 6. ________ the differences between thirsty plants and cut plants. The result shows that when the causes of stress change, they shout 7. ________. After the team recorded many kinds of other plants, they found that many plants like corn, wheat and grape plants send out sounds when they are under stress too.
“There is a 8. ________ that a lot of communication is happening,” Professor Hadany said. “Because other plants can probably hear the call of the stressed plants.”
Sound recordings of plants can bring humans lots of 9. ________, especially in farming. For example, people will make sure whether corn is getting enough water or where water is needed most without much 10. ________.

答案： Passage 20)
1. children's 2. silent 3. actually 4. to hear 5. more
6. telling 7. differently 8. possibility 9. advantages
10. difficulty

Passage 21
none,think,silent,stand,deep,courage,question,fast,protect,but,without,we
Once in a physics class, the teacher asked students, “Why do we have brakes(刹车) in our cars?” Soon, students gave different answers. A student 1. ________ up and replied, “Sir, to stop the car.” Another one said, “To reduce and control the speed of the car.”
However, 2. ________ of the answers were the same as the teacher's. Then he said, “All of your answers are right. But in my opinion, the brakes in the car make us able to drive much 3. ________.”
“If the car has no brakes, how fast are we ready to drive? It is the brakes in the car that give us 4. ________ to drive fast and safely.” Listening to this, the whole class was 5. ________ because no one had imagined this answer.
Similarly, there are many such “brakes” in our life which seem to stop us. For example, our parents may ask 6. ________ about progress or decisions in life. Their 7. ________ or suggestions may be considered as “brakes” which stand in our way. But we can see them as our supporters which can 8. ________ us while taking risks. Sometimes, we have to stop or even step back so that we can take a big step.
In fact, it is the “brakes” in life that help us a lot. 9. ________ these “brakes”, we could lose our direction or get into danger. So we need to understand that “brakes” in our life are not meant to push us back 10. ________ to make us move forward more quickly than before.

答案： Passage 21)
1. stood 2. none 3. faster 4. courage 5. silent
6. us 7. questions 8. protect 9. Without 10. but