Except a little warning two months before the Great Recession, the majority of economists didn't foresee its coming.

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Except a little warning two months before the Great Recession，the majority of economists didn't foresee its coming．
除了在经济大萧条两个月之前发出过一个小小的警告外，绝大多数经济学家并没有预测到经济大萧条的到来。
由题干关键词Great Recession和economists定位到原文画线处。
[B]段提到，经济太萧条始于2007年12月，是美国近四分之三个世纪以来经济下滑最严重的一次。但绝大多数经济学家并没有提前预测到该危机的到来，只是在2007年10月份的时候警告说“这次危机可能会很难看”。由此可知，经济学家提前两个月发出了警告，但并没有对经济危机做出预测。题干中的didn't foresee its coming对应原文中的did not anticipate ahead of time that this kind of thing could happen，故答案为[B]。

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1 Questions are based on the following passage.
It began with some marshmallows (棉花软糖). In the 1960s Walter Mischel, a psychologist then working at Stanford University, started a series of experiments on young children. A child was left alone for 15 minutes with a marshmallow or similar treat, with the promise that, if it remained uneaten at the end of this period, a second would be added. Some of the children, who were aged four or five at the time, yielded to temptation before time was up. Others resisted, and held out for the reward.
Dr. Mischel then followed the children's progress as they grew up. Those who had resisted, he found, did better at school than those who had given in. As adults they got better jobs, were less likely to use drugs and got into trouble with the law less frequently. Moreover, children's family circumstances suggested thatimpulsive behavior was as much learned as inherited. This suggested that it could be unlearned-improving the child in question's ch" nces in life.
Study after study has confirmed Dr. Mischel's insight. However, recent observations, however, raise the possibility that developing self-control is not always an unalloyed (纯粹的) good.
Work published two years ago by Gene Brody of the University of Georgia, who looked at a group of young black Americans, showed that those who exhibited serf-control as teenagers did indeed get the expected benefits. But if such serf-controllers came from deprived backgrounds, they developed higher blood pressure, were more likely to be obese and had higher levels of stress hormones than their less-serf-controlled peers.
That correlation did not apply to people who started farther up the social ladder.
Dr. Brody and his colleagues have followed this study with one that comes to an equally astonishing conclusion: for people born at the bottom of the social heap, seif-control speeds up the process of ageing.
Dr. Brody and his colleagues followed almost 300 black American teenagers of different backgrounds as they aged from 17 to 22. For the first few years the researchers assessed their volunteers' levels of self-control, and also looked for signs of depression, aggression and drug use. They assessed, too, those volunteers' socioeconomic backgrounds. But the last examination, when participants were 22 years old, was different.
Then, the researchers took a blood sample, recorded the DNA-methylation ( DNA 甲基化) patterns of cells in it, and worked out how much these deviated from the pattern expected at that particular age. As the study shows, for people from high-status backgrounds, higher serf-control meant lower cellular ages. For those whose background was low-status, the reverse was true.
Dr. Brody's findings are both intriguing and worrying. The research into gene methylation suggests changing methylation patterns are a common response to changing circumstances as well as changing age, as the body's physiology strnggies to keep up. Fortunately, people can change their circumstances in rational ways: the lesson of the marshmallows shows that. If Dr. Brody's result is confirmed, the challenge it poses will be to work out how to avoid the adverse effects of serf-control.
Which of the following is true of Dr. Mischel's experiment?

A．It probed into the self-control level of little children.

B．It showed that most children couldn't resist temptation.

C．It exhibited that serf-control connects with life achievement.

D．It found out a way to help children develop serf-control.

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2 Dr. Brody's new study with young black Americans reveals that ________.

A．developing serf-control is not beneficial at all

B．teenagers can benefit from developing self-control

C．the effect of serf-control relates to social background

D．serf-control causes high blood pressure and obesity

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3 What can we infer about DNA-methylation from the passage?

A．It can reveal levels of self-control.

B．It relates to the physiological age.

C．It is one of the ingredients of blood.

D．It changes with social circumstance.

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