[单项选择]At one time doctors discouraged taking multivitamins because they believed that multivitamins______.

[单项选择]At one time doctors discouraged taking multivitamins because they believed that multivitamins______.

[单项选择]Most doctors agree that overeating is one of the main health problems, since it places a great ______ on the heart.


A. strain
B. stress
C. strength
D. stroke

[单项选择]By the time new doctors get a job and try to finish their theses in spare time ______.
A. most of them died of some sickness
B. their holidays and evenings have been ruined by their jobs
C. most of them are completely tired of the narrowly defined subject
D. most of their grants run out

[单项选择]What had been taking place during the time of the Roses


A. the development of England
B. a series of wars
C. the growth of poetry
D. the Battle of the Armada

[单项选择]

One of the advantages of taking notes is that it forces you to pay closer attention to the class lecture. If you listen (36) to a professor who is talking on and on for an hour or so, your mind will often (37) and your attention will lessen. You are sitting in class and listening, but that (38) you are doing; (39) , when you listen actively you have to pay more careful and (40) attention to what (41) . This is because you are trying to (42) what you hear into an (43) , shortened written form. As a foreign student, you may find (44) very difficult to listen and write notes (45) at the same time. It is difficult (46) , but you will learn how to do (47) with practice. You (48) afraid you will forget what you are listening to (49) you are listening and writing at the same time, but the studies of researchers (50) the value of note-taking in (51) lecture material have shown
A. have been
B. are now
C. may be
D. are to be