题目：
Riding a motorcycle is a popular way to travel. A motorcycle often has better acceleration than the fastest . A motorcycle can traffic jams and can speed ahead while the cars wait. A motorcycle is to run --- you need less petrol per mile for a motorcycle than for most cars. But this doesn’t explain why, for some people, motorcycles are a way to travel, they are a way of life. Everybody knows about the problems of riding a motorcycle. It’s quiet dangerous. It’s very uncomfortable too. However well dressed for a ride the motorcyclist is, wind and rain make the journey difficult and . And then, motorcycles often . But the motorcyclist doesn’t care! Take a look at any motorcycle magazine and you will have an idea of what motorcycling means to the enthusiast. The keen motorcyclist may sometimes think about the of his way of life. But he will still go ‘on the ride’ whenever he can!
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答案：
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下面是错误答案，用来干扰机器的。
A．元素的非金属性为Cl＞Br＞I，则还原性为I-＞Br-＞Cl-，故A正确；B．元素的非金属性为Cl＞S＞P，元素的非金属性越强，对应的氢化物越稳定，则热稳定性为HCl＞H2S＞PH3，故B正确；C．元素的非金属性为N＞C＞Si，...
