Besides human beings, who is able to alter environment by engineering -考呗网题库移动版

单选题Besides human beings, who is able to alter environment by engineering feats?

A．Ant-lion.
B．Beaver.
C．Spider.
D．Insect.

参考答案B

解析:细节题。根据关键词”engineering feats”可定位至最后一段倒数第二句a power possessed to some extent even by the beaver,and preeminently by man．可知海狸和人类具备这种能力。因此，正确答案是B。

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单选题 How to define the relationship between environment and heredity?

A．Heredity is far more important than environment.
B．Environment is far more important than heredity.
C．They are independent from each other.
D．They are supplementary rather than exclusive factors.

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单选题Questions are based on the following passage.
Cigarette smoking is a health hazard of sufficient importance in the United States. It was 50 years ago this month that America´ s Surgeon General sounded that warning, marking the beginning of the end of cigarette manufacturing--and of smoking itself--as a respectable activity.
Some 20 million Americans have died from the habit since then. But advertising restrictions and smoking bans have had their effect: the proportion of American adults who smoke has dropped from 43% to 18%; smoking rates among teenagers are at a record low. In many other countries the trends are similar.
The current Surgeon General, Boris Lushniak, marked the half-century with a report on January 17th, declaring smoking even deadlier than previously thought. He added diabetes, color ectal cancer and other ailments to the list of ills it causes, and promised end-game strategies to extinguish cigarettes altogether.
New technologies such as e-cigarettes promise to deliver nicotine less riskily. E-cigarettes give users a hit of vapour infused with nicotine. In America, sales of the manufacturer, who is the fastest e-cigarettes-adopter, have jumped from nearly nothing five years ago to at least 1 billion in 2013.
At first, it looked as if e-cigarettes might lure smokers from the big tobacco brands to start ups such as NJOY. But tobacco companies have bigger war chests, more knowledge of smokers´ habits and better ties to distributors than the newcomers. Some experts reckon Americans will puff more e-cigarettes than normal ones within a decade, but tobacco folk are skeptical. E-cigarettes account for just 1% of America´s cigarette market. In Europe 7% of smokers had tried e-cigarettes by 2012
but only 1% kept them up.
And no one knows what sort of restrictions regulators will eventually place on reduced risk products, including e-cigarettes. If these companies can manage the transition to less harmful smokes, and convince regulators to be sensible, the tobacco giants could keep up the sort of performance that has made their shares such a fine investment over the years. But some analysts are not so sure.
Many tobacco firms are struggling to deliver the consistency of the earnings-per-share model we´ve seen in the past. If that persists, investors may fall out of love with the industry. A half-century after the Surgeon General´ s alarm, they, and hopeless smokers, are its last remaining friends.
It can be learned from Paragraph 1 that cigarette manufacturing in the United States _____

A．was of sufficient importance
B．was put forward by America' s Surgeon General
C．began to go downhill
D．used to be an honorable activity

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单选题 According to the passage, e-cigarettes _____

A．supply smokers with nicotine more safely
B．help the fastest e-cigarettes-adopter gain sales 1 billion times
C．are mastered by all tobacco firms as a new technology
D．have lured smokers from the big tobacco brands to start ups

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