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问题 单项选择题

男性患者，50岁，左胸闷气短2个月，胸痛二十多天，夜间重，查体颜面及颈部，胸壁略肿胀，胸壁静脉曲张，腋下有一拇指大小的淋巴结，无压痛，活动尚好，心率108/min，律整，左肺呼吸音消失。你准备做哪项检查以明确诊断

A．腋下淋巴结病理检查

B．胸腔积液脱落细胞检查

C．心电图心功能检查

D．胸CT

E．胸腔积液抗酸杆菌涂片

答案

参考答案：A

单项选择题

The idea that some groups of people may be more intelligent than others is one of those hypotheses that dare not speak its name. But Gregory Cochran is (1) to say it anyway. He is that (2) bird, a scientist who works independently (3) any institution. He helped popularize the idea that some diseases not (4) thought to have a bacterial cause were actually infections, which aroused much controversy when it was first suggested.

(5) he, however, might tremble at the (6) of what he is about to do. Together with another two scientists, he is publishing a paper which not only (7) that one group of humanity is more intelligent than the others, but explains the process that has brought this about. The group in (8) are a particular people originated from central Europe. The process is natural selection.

This group generally do well in IQ test, (9) 12-15 points above the (10) value of 100, and have contributed (11) to the intellectual and cultural life of the West, as the (12) of their elites, including several world-renowned scientists, (13) . They also suffer more often than most people from a number of nasty genetic diseases, such as breast cancer. These facts, (14) , have previously been thought unrelated. The former has been (15) to social effects, such as a p tradition of (16) education. The latter was seen as a (an) (17) of genetic isolation. Dr. Cochran suggests that the intelligence and diseases are intimately (18) . His argument is that the unusual history of these people has (19) them to unique evolutionary pressures that have resulted in this (20) state of affairs.

7（）

A.advises

B.suggests

C.protests

D.objects
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单项选择题

下列哪种细胞因子可以刺激造血干细胞增殖（）

A.IL-4

B.TNF

C.IL-2

D.IFN

E.CSF
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