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问题 单项选择题

依据《水污染防治法》，( )向水体排放油类废液。

A．禁止
B．严格限制
C．经当地环境保护行政主管部门同意后可以
D．经当地水资源管理部门同意后可以

答案

参考答案：A

单项选择题

Standard English is the variety of English which is usually used in print and which is normally taught in schools and to non-native speakers learning the language. It is also the variety which is normally (1) by educated people and used in news broadcasts and other (2) situations. The difference between standard and nonstandard, it should be noted, has (3) in principle to do with differences between formal and colloquial (4) ; standard English has colloquial as well as formal variants.

(5) , the standard variety of English is based on the London (6) of English that developed after the Norman Conquest resulted in the removal of the Court from Winchester to London. This dialect became the one (7) by the educated, and it was developed and promoted (8) a model, or norm, for wider and wider segments of society. It was also the (9) that was carried overseas, but not one unaffected by such export. Today, (10) English is arranged to the extent that tile grammar and vocabulary of English are (11) the same everywhere in the world where English is used; (12) among local standards is really quite minor, (13) the Singapore, South Africa, and Irish varieties are really very (14) different from one another so far as grammar and vocabulary are (15) .Indeed, Standard English is so powerful that it exerts a tremendous (16) on all local varieties, to the extent that many of long-established dialects of England have (17) much of their vigor and there is considerable pressure on them to be (18) . This latter situation is not unique (19) English: it is also true in other countries where processes of standardization are (20) .But it sometimes creates problems for speakers who try to strike some kind of compromise between local norms and national, even supranational ones.

7（）

A.preferred

B.learned

C.praised

D.created
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单项选择题 A3/A4型题

患者，女性，71岁，每天刷牙1次，除此之外不采取其他口腔卫生措施，有一侧咀嚼习惯，从未接受过口腔检查和治疗，检查发现其牙龈萎缩明显，牙齿磨耗，牙石较多，无面龋，有3个牙患根面龋。

该老年人患根面龋的主要原因是（）

A.刷牙次数少

B.没有养成饭后漱口习惯

C.牙根外露，根面菌斑增多

D.偏侧咀嚼不良习惯

E.未能定期洁治
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