could take the final the following day."可知是在星期二。

27．From the passage we know ________.

A．the two guys came back to campus late on purpose

B．Bonk wasn't strict with the two guys

C．repairing the flat tire took the two guys a lot of time

D．Bonk didn't believe the two guys' explanation

答案　D

解析　细节理解题。根据第二段可知A、C项错误；根据最后一段我们可判断Bonk对他们俩还是较严格的，故B项错误。由最后一段中Bonk给他们出的第二个题目可知，D项正确。

28．After the final，they ________.

A．may apologize to Professor Bonk

B．must have the same scores

C．wouldn't be confident in their Chemistry

D．would feel happy and relieved

答案　A

解析　推理判断题。根据最后一段我们可知考试要求他们答出哪个轮胎爆胎，这是他们所没有预料到的，说明谎言被揭穿了。故选A。

In many cases, depression(抑郁)can come on quite suddenly and seemingly for no apparent reason.In other case, it can follow a very stressful situation or a major personal life change.We now know that depression may also be partly genetic(遗传的), making some people more sensitive than others.Sometimes an experience such as the death of a loved one or an awful meeting may cause feelings of great sadness, so the attack of desperation can go unnoticed.Major life­changing events such as marriage, financial problems, children leaving the"nest"， or retiring can also set off the attack of desperation.Serious illnesses such as cancer, heart disease, are regularly associated with depression.

Although sadness can affect anyone at any age, according to the NIMH (National Institute of Mental Health), women are twice as likely to become depressed as men.That translates to approximately one in four women in the United States each year that will suffer from hopelessness.And even though they are more likely than men to seek professional help, only one in three of these women actually will.

Postpartum depression is a serious and growing problem for women.NIMH estimates that ten percent of all women will experience this truly serious medical condition about one month following their babies' birth.It is said that fifteen percent of severely depressed women will