《2025年海淀单元测试AB卷八年级英语下册外研版》

A(镇江中考)
The nose helps us a lot. It tells us when dinner is almost ready and leads the way to sweet cakes. It also tells us to keep away from bad smells. But do you know the interesting facts about something that smells bad?
Fish
You might have noticed that fish smell unpleasant sometimes. Fish from the ocean smell the strongest. These saltwater fish have a chemical(化学物质) called TMAO. While we prepare fish for cooking, TMAO is already changing into other things. One is called TMA. It smells super smelly. Usually, before cooks make saltwater fish a dish, they wash fish. And most of the TMA can be washed away. Cooks also add lemon to make the fish less smelly.
Feet
Foot sweat(脚汗) itself does not have a bad smell at first. But it has food and water that the bacteria(细菌) need. With them, the bacteria give off some smell. Most shoes often keep sweat in them. That makes shoes and socks warm and wet—a place where bacteria can grow. Different types of bacteria give off different smells. That's why feet may smell like bad vegetables, smelly eggs or other smelly things.
Eggs
Many things smell terrible when they go bad. But a bad egg gives off the most famous bad smell of all and draws people's attention. When an egg goes bad, the bacteria help to change the sulfur(硫) in its white part into sulfur and hydrogen(硫化氢). And it smells really bad. The nose just warns us away from it because too much sulfur and hydrogen will harm our health.
1. How does the writer tell readers that something smells bad in the passage?
A. By showing forms.
B. By listing numbers.
C. By drawing pictures.
D. By giving examples.
2. What can you learn from the passage?
A. Different bacteria produce the same smell.
B. A smelly egg gives off sulfur and hydrogen.
C. Dry shoes and socks can help bacteria grow.
D. Lemon increases the bad smell of saltwater fish.
3. Which part of a magazine is the passage most probably taken from?
A. Word History. B. Cooking Tips.
C. Travel Guide. D. Fun Facts.

答案： A)1—3 DBD

B(柳州中考改编)
Does talking in front of people make you shy? If so, you are not alone. Many people in the world suffer from shyness and want to change this situation. 4. ______ Here are some tips for you.
Find out the cause of your shyness. Do you become shy in front of new listeners? Please try to find out the thoughts that go through your head before the shyness comes out. You're okay being around your family, right? Are they different from the strangers around you? Of course not. 5. ______
Place your attention on others. For most of us, when we think we will feel nervous if we speak up or stand out, we become shy. 6. ______ When you stop paying attention to yourself, you stop worrying about your performance(表现).
7. ______ You have got used to hearing your own voice. Record your voice pretending(假装) to have conversations with others. At the beginning you'll feel like an actor, but soon it will become a habit. After doing it for some time, you will be able to voice your opinions bravely.
Stop comparing yourself with others. The more you compare yourself with others, the more you will feel shy because you may think you are not good enough. 8. ______ Everyone else must have his own confidence problems too.
阅读短文,从方框中选出能填入文中空白处的最佳选项。选项中有一项为多余选项。
A. Listen to your own voice.
B. Practise speaking loudly to yourself.
C. Try not to think about your own disadvantages.
D. However, it takes time and effort(精力) to solve the problem.
E. You just know them better and what's more, they know you as well.
F. That's why you should notice others instead.

答案： B)4—8 DEFAC