题目内容
The concept of time as a commodity in the third paragraph means that ______.
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Man, however much he may like to【C1】______the Contrary, is part of nature. Can he【C2】______a pollution that is now so thoroughly【C3】______throughout our world？
We know that even single exposures to these【C4】______, if the amount is large enough, can cause extremely severe【C5】______. But this is not the major problem. The sudden illness of death of farmers, farm workers, and others【C6】______to sufficient quantities of pesticides are very sad and should not【C7】______. For the population as a【C8】______, we must be【C9】______concerned with the【C10】______effects of absorbing small amounts of the pesticides that【C11】______pollute our world.
【C12】______public health officials have pointed out that the biological effects of chemicals are【C13】______over long periods of time, and that the danger to the【C14】______may depend on the sum of the exposures【C15】______throughout his lifetime. For these very reasons the danger is easily【C16】______It is human【C17】______to shake off what may seem to us a threat of future disaster. "Men are naturally most impressed by diseases which have obvious signs," says a wise【C18】______, Dr. Rene Dubos, "yet some of their worst enemies slowly【C19】______them【C20】______."
【C1】
The author suggests that the language in ads should be understood ______.
听力原文：M: The guests are leaving for New York today on the ten o'clock flight. We need someone to get them to the airport on time.
W: Ordinarily, I'd be happy to, but my car is in the garage.
M: It doesn't matter. We'll take a taxt.
How are the guests going to New York？
听力原文：W: Well, Mr. Steve, we have had an interesting discussion about your work. Now, tell us something about your after work activities.
M: I guess not much different from everyone else. I'm fond of sports, and I am about 3 miles every day. I particularly enjoy cross-country running, where you have to run across fields, jump over streams and so on. While I'm running I think about all kinds of things, and at the end of a run I'm sometimes surprised to find that I've managed to solve a problem that was on my mind.
Next year I'm going to ay the London Marathon. It's a long, hard race—26 miles, or 42 kilometres and you have to be tough to finish, but I very much want to do it. I worry a bit about getting old, and I'd like to prove to myself that I'm still almost as well as I was twenty years ago. I'm interested in climbing as well as running. I'll never become an expert climber, but I know what I'm doing in the mountains. I successfully completed a course in snow and ice climbing when I was younger, and I've done a lot of easy climbs in the Alps during the last few years. My wife doesn't share my interest in mountains. She agreed to go climbing with me once, but she found that she felt sick as soon as she reached above 1000 metres, so we decided to follow different hobbies.
W: You certainly seem to enjoy various types of recreation. All right, Mr. Smith. Thanks for your interesting talk.
What are the man's hobbies？
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