Which of the following is true about habits according to the passage?-考呗网题库移动版

单选题Which of the following is true about habits according to the passage?

A．They are natural endowments to living creatures.
B．They are more important than instincts to all animals.
C．They are subject to the formative influence of the environment.
D．They are destined to open out a much more far-reaching possibility in the evolution of human beings.

参考答案C

解析:细节题。根据关键词habits可定位到第二段第四句Habits，instead of being born ready-made were left more and more to the formative influence of the environment，即习惯并不是天生的，更多受环境影响。因此，正确答案是C。

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

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

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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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