单项选择题：为了掌握全国乳制品的质量，选出蒙牛、伊利、光明和三元等几个大型乳制品企业进行调查，这

题型：单项选择题

Generally speaking, a British is widely regarded as a quiet, shy and conservative person who is (1) only among those with whom he is acquainted. When a stranger is at present, he often seems nervous, even (2) . You have to take a commuter train any morning or evening to (3) the truth of this.

Serious-looking businessmen and women sit reading their newspapers or dozing in a corner; hardly anybody talks, since to do so would be considered quite (4) .

(5) , there is an unwritten but clearly understood code of behavior which, once broken, makes the offender immediately the object of (6) .

It has been known as a fact that a British has a (7) for the discussion of their weather and that, if given a chance, he will talk about it (8) .

Some people argue that it is because the British weather seldom (9) forecast and hence becomes a source of interest and (10) to everyone.

This may be so. (11) a British cannot have much (12) in the weathermen, who, after promising fine, sunny weather for the following day, are often proved wrong (13) a cloud over the Atlantic brings rainy weather to all districts! The man in the street seems to be as accurate — or as inaccurate — as the weathermen in his (14) .

Foreigners may be surprised at the number of references (15) weather that the British (16) to each other in the course of a single day. Very often conversational greetings are (17) by comments on the weather. “Nice day, isn’t it” “Beautiful!” may well be heard instead of “Good morning, how are you” Although the foreigner may consider this exaggerated and comic, it is (18) .pointing out that it could be used to his advantage. If he wants to start a conversation with a British but is at a loss to know (19) to begin, he could do well to mention the state of the weather. It is a safe subject which will (20) an answer from even the most reserved of the British.

4（）

A.impolite

B.defensive

C.deliberate

D.offensive

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题型：多项选择题

干扰素抗病毒感染的机制是（）

A.阻止病毒进入细胞

B.降解病毒mRNA

C.抑制病毒蛋白转录

D.抑制病毒增强子活性

E.抑制病毒包装

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题型：单项选择题

犬，6月龄，头部出现圆形脱毛区，并且脱毛区逐渐扩大，患部伍氏灯检查有强荧光。治疗该病的首选药物是（）

A、氧氟沙星

B、伊维菌素

C、特比萘芬

D、多粘菌素

E、红霉素

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题型：单项选择题

结构主义语言学的代表人物是

A．笛卡儿

B．萨特

C．罗兰·巴特尔

D．黑格尔

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题型：单项选择题

场景(二) 甲公司与乙施工企业签订建筑材料买卖合同，合同约定，甲公司向乙施工企业提供建材，货款6万元，乙企业向甲公司支付定金1万元，如任何一方不履行合同应支付违约金1.5万元。合同签订后，甲公司立即与生产厂家丙公司签订了购买合同。由于丙公司的资金短缺，无法保证向甲公司供货，致使乙施工企业未能及时收到建筑材料而造成2万元的损失。
根据场景(二)，回答下列问题：

《合同法》规定的承担违约责任是以( )为原则的。

A．惩罚性

B．平等性

C．补偿性

D．合理性

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为了掌握全国乳制品的质量，选出蒙牛、伊利、光明和三元等几个大型乳制品企业进行调查，这

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