Passage Seven
Many of today’s college students are suffering from a form of shock. Lisa is a good example of a student in shock. She is an attractive, intelligent twenty-year-old college _1_ at a state university. Now, only three years later, Lisa is miserable. She has _2_ her major four times and is forced to hold down two part-time jobs in order to pay her tuition. She suffers from sleeping and eating disorders and has no _3_ friend. Sometimes she bursts out crying for no _4_ reason.
What is happening to Lisa happens to millions of college students each year. As a result, roughly one-quarter of the student population at any time will suffer from _5_ of depression. Half of them will experience depression intense enough to call for _6_ help.
But many of them _7_ the idea because they don’t want people to think there’s something wrong with them.
There are two reasons today’s college students are suffering more than those in earlier generations. First is a weakening family support structure. Today, with high _8_ rate, the traditional family is not always available for support. Another problem is _9_ pressure. In the last decade tuition cost rose about sixty-six percent at public colleges and ninety percent at private schools. _10_ , most students must work at least part-time. It can be depressing to students to be faced with the added tuition costs.
Passage Eight
What determines the kind of person you are? What factors make you more or less bold, intelligent, or able to read a map? All of these are influenced by the interaction of your genes and the environment in which you were _1_ . The study of how genes and environment interact to influence _2_ activity is known as behavioral genetics. Behavioral genetics has made important _3_ to the biological revolution, providing information about the extent to which biology influences mind, brain and behavior.
Any research that suggests that _4_ to perform certain behaviors are based in biology is controversial. Who wants to be told that there are limitations to what you can 5 based on something that is beyond your control, such as your genes? It is easy to accept that genes control physical characteristics such as sex, race and eye color. But can genes also determine whether people will get divorced, how 6 they are, or what career they are likely to choose? A concern of psychological scientists is the _7_ to which all of these characteristics are influenced by nature and nurture（养育）, by genetic makeup and the environment. Increasingly, science _8_ that genes lay the groundwork for many human traits. From this perspective, people are born _9_ like undeveloped photographs: The image is already captured, but the way it _10_ appears can vary based on the development process. However, the basic picture is there from the beginning.
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