题目列表(包括答案和解析)
Seeing a volcano erupt (喷发) is a wonderful experience, and you can really feel the heat by climbing to the summit of Pacaya for a close-up view. There are guided tours every day up this highly active volcano from Antigua. Giving travelers a chance to see Mother Nature at her most powerful (强大的). 小题1:Many tours are timed for people to _____.| A.get down the mountain in time when night falls |
| B.avoid the smell from the upwind direction of the cone |
| C.enjoy the fantastic eruption against the darkening sky |
| D.appreciate the beauty of the 2,560-metre-high mountain |
小题2:The word “summit” appears several times in the passage. It means _____.| A.remained, cooled rocks along the path |
| B.loud sound and terrible smell in the air |
| C.the most exciting happening in a place |
| D.the top point of a mountain or hill |
小题3:What is the main purpose of this passage?| A.To have more tourists come to Pacaya. |
| B.To describe the beauty of Pacaya. |
| C.To introduce guided tours to Pacaya. |
| D.To explain the power of nature at Pacaya. |
Lightning(闪电)is shocking, and it happens all over the world! Scientists think that there are more than three million lightning strikes(袭击)every day in the world-that’s thirty strik
es every second.
Lightning can also be very dangerous. Every year, lightning kills people because it can start big fires or because it reaches temperatures up to 28,000 degrees centigrade. American Roy Sullivan, who worked in a park, holds the record for surviving the most lightning strikes. Between 1942 and 1983, he was hit seven times!
So, why does lightning strike? Lightning strikes happen when ice and water in clouds rub(摩擦)together, and cause atmospheric(大气层的)changes. When this happens, it creates a static charge(静电电荷). Lightning can strike inside the cloud, between two clouds and between a cloud and Earth. It’s the last type of strike that is the most dangerous for humans. About 1,000 people get struck by lightning every year in the United States, and about 100 of them die as a result.
Lightning is certainly not something to toy with. When lightning strikes, it’s best to stay inside a large building. To stay safe, do not stand under trees, on hills or near water. Trees attract lightning. Also, do not lie down on the
ground, otherwise the electricity may
go through you and cause a heart disease.
1 Lightning strikes ________.
A. happen three billion times each day
B. will start when there are big fires
C. can reach very high temperatures
D. kill all those who work in a park
2 What does “surviving” in paragraph 2 mean in Chinese?
A.目睹 B.幸存 C.制造 D. 遇难
3 We can infer(推断)from paragraph 3 that ________.
A. lightning strikes are
caused whenever ice and water meet
B. lightning between two clouds is the most dangerous for humans
C. lig
htning strikes create static charge
D. about one tenth of the people struck by lightning die every year in America
4 Which expression means “to toy with” in the last paragraph?
A. to play with B. to take seriously C. to show off D. to take it easy
5 Where’s the best place to be when lightning strikes?
A. On top of a hill. B. In a swimming pool. C. In a tree. D. Inside.
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