下列哪一种药物不是哮喘的缓解型药物?() A.胆碱能受体拮抗剂 B.全身糖皮质激素

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问题:

下列哪一种药物不是哮喘的缓解型药物?()

A.胆碱能受体拮抗剂

B.全身糖皮质激素

C.白三烯调节剂

D.短效口服β2受体激动剂

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小明用天平、钩码、弹簧秤研究物体所受重力跟物体质量的关系,测量记录的实验数据如下表

(1)某次测量弹簧秤的读数如图所示,请你将弹簧秤的读数填入上表空格中;

(2)由实验可以得出的结论是:_________________________________。

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如何进行可比产品成本降低任务完成情况的分析?

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探测站设备检修时,维修人员必须与()联系。

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第一次把一根一米长的木棒锯成相等的两段,第二次再把锯成的两段各锯成相等的两段。至少经过儿次这样的操作后,每段木棒的长度小于1厘米

A.6

B.7

C.10

D.12

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, (2) embarrassed. 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 offensive. (4) , there is an unwritten but clearly understood code of behavior which, (5) 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 make to each other in the course of a single day. Very often conversational greetings are (16) by comments on the weather. "Nice day, isn’t it" "Beautiful!" may well be heard instead of "Good morning, how are you" (17) the foreigner may consider this exaggerated and comic, it is worthwhile pointing out that it could be used to his advantage. (18) he wants to start a conversation with a British but is (19) to know where 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.

15()

A.about

B.on

C.in

D.to

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