Passage 1
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Diving is popular all over the world. It is usually done in the ocean, but divers also explore other bodies of water, including lakes, rivers, and ponds. Snorkeling (戴呼吸管潜泳) on the surface (or just below) is a common form of diving, but many people use scuba (水肺), which stands for self-contained underwater breathing apparatus. Scuba divers carry a tank of air that allows them to breathe while diving underwater. Throughout history, people have been fascinated by life underwater, and the Professional Association of Dive Instructors (PADI) estimates that there are now 6 million active divers worldwide. They engage in many different types of diving, of which wreck, cave, commercial, and military diving are just a few. The most common form of diving is sport diving, or recreational diving, which is practiced at dep A. Diving (underwater), act of entering water and remaining below the surface to explore, to work, or simply to have fun. B. Diving (underwater), act of exploring water below the surface. C. Diving (underwater), act of jumping into the water, the most common form of diving is sport diving, or recreational diving. D. Diving (underwater), act of going into water and remaining above the surface to explore, to work, or simply to have fun. [简答题]load factors
[简答题]As a result, the modern world is increasingly populated by intelligent robots whose presence we barely notice but whose universal existence has removed much human labor. And thanks to the continual miniaturization of electronics and micro-mechanics, there are already robot systems that can perform some kinds of brain and bone surgery with far greater precision than highly skilled physicians can achieve with their hands alone. But if robots are to reach the next stage of laborsaving utility, they will have to be able to make at least a few decisions for themselves.
Despite a spell of initial optimism in the 1960s and 1970s when it appeared that transistor circuits and microprocessors might be able to copy the action of the human brain by the year 2010, researchers lately have begun to extend that forecast by decades if not centuries. [填空题]The survey shows that green food is becoming (popular) ______ than traditional food.
[单项选择]Our products are sure to enjoy popu]arity in your market for thei good quality and reasonable prices．
A. 我们生产的商品物美价廉，相信在你方市场上是一定会找到销路的。 B. 我们产品的质量标准高，但价格不高，在你方市场却根本无法买到。 C. 我们的产品由于质量优良，价格合理，一定会受到你方市场的欢迎。 D. 我们产品的价格虽然高，但是品质优良，所以在你们市场供不应求。 [单项选择] In the United States, 30 percent of the adult population has a "weight problem". To many people, the cause is obvious: they eat too much. But scientific evidence does little to support this idea. Going back to the America of the 1910s, we find that people were thinner than today, yet they ate more food. In those days people worked harder physically, walked more, used machines much less and didn’t watch television.
Several modern studies, moreover, have shown that fatter people do not eat more on the average than thinner people. In fact, some investigations, such as the 1979 study of 3,545 London office workers, report that, on balance, fat people eat less than slimmer people.
Studies show that slim people are more active than fat people. A study by a research group at Stanford University School of Medicine found the following interesting facts:
The more the men ran, the more body fat they lost.
The more they ran, the greater amount of food they ate.
Thus, t
A. Yes, there is plenty of evidence. B. Of course, there is some evidence to show this is true. C. There is hardly any scientific evidence to support this. D. We don’t know because the information is not given. 我来回答: 提交
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