Bats are the only flying mammal(哺乳类动物) in the world. They can’t see very well. It is long believed, in many places, that all bats are blind(瞎的). “Blind as a bat” is often heard.
Yet they have no trouble flying in the darkest nights and finding their way around. How can bats fly and see at night? They fly by radar (雷达).
The bat’s radar system works the same way as the one that ships and planes use. When a bat flies through the air, it makes sounds that people can’t hear. If the sounds hit things, they will come back. The bat’s ears can receive the messages. In this way it can know where the things are.
Bats go out to look for food at night. In the daytime they stay in some dark places. Some people think bats are bad animals. In fact, they are useful animals.
1.The bat has no trouble flying in the darkest nights because________.
A. its eyes are good
B. it can’t see well
C. it can make a sound
D. it has a kind of radar system to help it
2.When does the bat begin to go out to look for food?
A. In the daytime.
B. In the early morning.
C. At night.
D. In the late afternoon.
3.The bat “sees” things with its________.
A. ears B. eyes C. mouth D. nose
4.Which of the following is True?
A. The bat is the only flying animal in the world.
B. The bat has poor eyesight, but it can “see” its food.
C. Not all bats are afraid of flying in the sun.
D. The bat often comes out in the daytime.
Do you know the Air Quality Index(空气质量指标)? Do you pay attention to(关注) the AQI report in the newspaper? The AQI helps us understand what the quality of the air around us means to our health. The AQI uses colours, numbers and words to tell us about the air. Let’s see what these colours and numbers mean.
AQI colours | AQI numbers | Health words | What to do |
Green | 0---50 | Good | Just enjoy the clean air! |
Yellow | 51---100 | Moderate(适中的) | Air quality is fine for most people. |
Orange | 101---150 | Unhealthy(不健康的) for sensitive (敏感的) groups | Active children, adults and people with lung disease(肺病) should spend less time outdoors. |
Red | 151---200 | Unhealthy | Active children, adults and people with lung disease shouldn’t spend too much time outdoors. Everybody else should try to spend less time outside. |
Purple | 201---300 | Very unhealthy | Active children, adults and people with lung disease shouldn’t spend any time outdoors. Everybody else should try not to go outside. |
Maroon | 300--- | Very healthy, poisonous(有毒的) | Everybody should not go outside. Stay indoors all the time. |
1.If the weather report says today’s AQI number is 39, we can________.
A. enjoy the clean air
B. spend less time outside
C. try not to go outside
D. stay inside all the time
2.If the AQI colour is purple, people with lung disease________.
A. should spend less time outdoors
B. shouldn’t spend too much time outdoors
C. should not spend any time outdoors
D. should try not to go outside
3.To tell about the quality of the air, which are mentioned(提及到)?
① words ② numbers ③ weather ④ colours
A. ①②③④ B. ①②③ C. ②③④ D.①②④
4.Which of the following is True ?
A. If the AQI number is 140, the AQI colour will be red.
B. If the AQI colour is purple, the air is best for people.
C. People with lung disease are very sensitive to the air.
D. The AQI can’t help people to know the air quality.
完形填空 先通读下面的短文，掌握其大意，然后从下面四个答案中选择可以填入相应空白处的最佳答案。
A man goes to a farm and finds a beautiful horse, and he wants to it.
After he gets it, he jumps on the horse and says: “Go now!” the horse doesn’t move. He asks the why. The farmer says, “It runs only you say, ‘Thank God.’ But to stop , you have to say, ‘ Amen.’”
So the man says, “Thank God.” The horse running. The man is so happy that he keeps________ “Thank God”. The horse runs faster and faster till they arrive at(到达) the side the cliff (悬崖). At the moment the man , “Amen!” The horse stops before they fall down the cliff. The man looks at the sky and shouts happily, “Thank God!”
1.A. see B. buy C. help D. visit
2.A. So B. And C. Or D. But
3.A. farmer B. teacher C. actor D. visitor
4.A. how B. why C. when D. where
5.A. me B. you C. her D. it
6.A. loves B. stops C. starts D. finishes
7.A. saying B. talking C. speaking D. telling
8.A. of B. for C. in D. on
9.A. smiles B. sings C. thinks D. shouts
10.A. down B. up C. for D. After
--- Thank you for ________ me up. I’m too sleepy. ---________.
A. waking; You’re welcome B. to wake; All right
C. waking; That’s right D. waking; OK
--- ________ would you like to have? --- ________. I have lots of bread. I’m not hungry.
A. What else; Please B. What else; I’d love to
C. When else; Thanks a lot D. What else; Thanks a lot
________ some exercise is good for her. It’s time for her ________ a rest.
A. Doing; having B. Doing; to have
C. To do; having D. Do; to have
