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问题 单项选择题

脑血栓形成最常见的病因是：（）

A.高血压病

B.脑动脉粥样硬化

C.各种脑动脉炎

D.血压偏低

E.红细胞增多症

答案

参考答案：B

解析：脑血栓形成最常见的病因是脑动脉粥样硬化，其次是高血压病伴发的脑部小动脉变化及各种脑动脉炎，少见的病因为红细胞增多症。血压偏低可作为脑血栓形成的诱因。

单项选择题

The nobler and more perfect a thing is, the later and slower it is becoming mature. A man reaches the mature (1) of his reasoning powers and mental faculties (2) before the age of twenty-eight; a woman at eighteen. And then, too, in the case of woman, it is the only reason of a sort--very mean in its (3) . That is why women remain children their whole life long; never seeing (4) but what is quite close to them, (5) fast to the present moment, taking appearance for (6) , and preferring (7) to matters of the first importance. For it is (8) his reasoning faculty that man does not live in the present only, (9) the brute, but looks about him and considers the past and the future; and this is the origin of (10) , as well as that of care and anxiety which so many people (11) Both the advantages and the disadvantages, which this (12) , are (13) in by the woman to a smaller extent because of her weaker power of reasoning. She may, in fact, be described as intellectually shortsighted, (14) , while she has an immediate understanding of what lies quite close to her, her field of (15) is narrow and does not reach to what is (16) ; so that things which are absent, or past, or to come, have much less effect upon women than upon men. This is the reason why women are inclined to be (17) and sometimes carry their desire to a (18) that borders upon madness. In their hearts, women think it is men’s business to earn money and theirs to spend it--if possible during their husband’s life, (19) , at any rate, after his death. The very fact that their husband hands them (20) his earnings for purposes of housekeeping strengthens them in this belief.

3（）

A.dimensions

B.perspectives

C.indices

D.diameters
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单项选择题

1岁半小儿，4天前发热、咳嗽、流涕，今晨发现前额及耳后浅红色斑丘疹，两眼泪汪汪，体温仍高，咽充血，眼结膜充血，口腔黏膜红，精神不振，肺呼吸音粗。其诊断的最大可能是（）

A.风疹

B.幼儿急疹

C.猩红热

D.麻疹

E.肠道病毒感染
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