题目内容

尿毒症患者发生贫血的主要原因

A. 水钠潴留
B. 促红细胞生成素减少
C. 活性维生素D3减少
D. 出血倾向
E. 含氮代谢产物潴留

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儿童颌骨和牙弓主要生长发育期是

A. 新生儿期
B. 婴儿期
C. 幼儿期
D. 混合牙列阶段
E. 年轻恒牙列阶段

You can never do anything well without (put) ______ your heart into it.

England is not a big country: from north to south and from east to west (1) is only about three hundred miles (2) . But for a small country it has a (3) range of climates. People who have (4) visited England, or who have visited only (5) of it, often (6) of thinking that it is a cold and wet country. (7) the summer months of June to September, this is probably true of the (8) of England and Midlands. In the south, however, the (9) is much pleasant. One (10) is that when people retire from a job in the south they often prefer to (11) to the milder south. Perhaps the warmest (12) of the country is the southwest, which consists of the counties of Devon and Comwall. The (13) Gulf Stream flows across the North Atlantic Ocean from the Gulf of Mexico and makes the coastal regions of the (14) quite warm. Palm trees, bamboo and many semi-tropical plants grow (15) in the southwest of England. Flowers and vegetables ripen (16) a month earlier than those elsewhere. Farmers in the area obtain (17) for their vegetables and flowers because they are ready earlier. In winter there (18) several feet of snow in other parts of England (19) there will probably be no snow at all in the southwest. This may be (20) the southwest is one of England’s most popular holiday areas.

A. nothing else
B. a lower price
C. a higher price
D. everything

What do we mean by a perfect English pronunciation In one (1) there are as many different kinds of English as there are speakers of it. (2) two speakers speak in exactly the same (3) . We can always hear differences (4) them, and the pronunciation of English (5) a great deal in different geographical (6) . How do we decide what sort of English to use as a (7) This is not a question that can be (8) in the same way for all foreign learners of English. (9) you live in a part of the world (10) India or West Africa, where there is a long (11) of speaking English for general communication purpose, you should (12) to acquire a good variety of the pronunciation of this area. It would be (13) in these circumstances to use as a model BBC English or (14) of the sort. On the other hand, if you live in a country (15) there is no traditional use of English, you must take (16) your model some form of (17) English pronunciation. It does not (18) very much which form you choose. The most (19) way is to take as your model the sort of English you can (20) most often.

A. listen
B. hear
C. notice
D. find

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