[简答题]It is easy to understand why an earthquake causes terror. Yet in old age there may be terror of a very private nature, a sense of disintegration sometimes seeming from inner conflicts, sometimes from a premonition of death or the fear of becoming dependent.

[简答题]It is easy to understand why an earthquake causes terror. Yet in old age there may be terror of a very private nature, a sense of disintegration sometimes seeming from inner conflicts, sometimes from a premonition of death or the fear of becoming dependent.

[单项选择]It is relatively easy to understand how and why nations engage in international trade.
A. 相对而言，国与国之间要发展国际贸易是比较简单的。
B. 国与国之间如何并为什么从事国际贸易是比较容易理解的。
C. 很多国家为什么并怎样加入国际贸易，这是相当容易理解的。
D. 一些国家为什么和怎样致力于国际贸易，这是相对简单的问题。

[简答题]Consequently, it is easy to understand why little girls often perform school tasks better than boys, especially if the task requires sitting still, obeying commands, and accepting the teacher's ideas. A girl may pass easily through the first few grades.

[单项选择]Why should the program be easy to understand
A. It is meant for nonscientists.
B. It is simple enough for children.
C. A discussion will be held after the show.
D. There will be a series following the first now.

[单项选择]People are coming to understand that easy access to（）is often the key to success in this highly developed society.
A. information
B. the information
C. an information
D. informations

[单项选择]I didn’t understand at first why he couldn’t pass the test, no matter（）hard he had tried.
A. when
B. where
C. what
D. how

[判断题]
Scientists do not understand why women should outlive men by five years.

[单项选择]　　To understand why someone becomes an optimist or a pessimist, it helps to understand what distinguishes them. Say you crash your car. Do you expect good things to happen after the accident ― an easy recuperation(挽回损失), a fat check from your insurer Or do you worry that your neck will hurt forever 　　"Optimistic people tend to feel that bad things won’’t last long and won’’t affect other parts of life," Seligman says. Pessimists tend to believe one negative incident will last and undermine every- thing else in their lives. 　　Also important, researchers say, is the story you construct about why things happen -- your explanatory style. Optimists believe that bad events have temporary causes ― "The boss is in a bad mood." Pessimists believe the cause is permanent ― "The boss is a jerk." 　　This sense of control distinguishes one type from the other. Positive thinkers feel powerful. Negative thinkers, Seligman says, feel helpless because they have learned to believe they’’re doomed, no
A. go below
B. weaken
C. effect
D. destroy

[单项选择]Passage Three When trying to understand why some people have trouble living within their means, we tend to blame factors such as high interest rates and irresponsible spending. Now researchers have found another possible factor to add to the list: a gene linked to credit-card debt. Earlier work has shown that genetics plays a role in how we handle money. But a recent study was the first to show that a particular gene affects financial behavior outside the lab. Researchers at the University of California, San Diego, and the London School of Economics looked at genetic data and questionnaires already collected from more than 2,000 young adults aged 18 to 26 as part of the National Longitudinal Study of Adolescent Health. In particular, they looked at whether these young adults said they had any credit-card debt and what version of the MAOA gene they had. Monoamine oxidase A (MAOA) (甲型单胺氧化酶) is an enzyme that breaks down the signaling chemicals called neuro-transmitters in
A. People with two different MAOA genes run a greater risk of carrying debt than those with two low MAOA genes.
B. How much MAOA can be produced by brain cells depends on what versions of MAOA genes a person has.
C. People with two high MAOA genes are less likely to make ends meet than those with two different MAOA genes.
D. How much MAOA can be produced by brain cells is related to how many MAOA genes a person has.