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维生素K的作用机制是
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校验系数是评定结构工作状况的主要依据。( )(检测员不考)
Directions: There are 20 blanks in the following passage. For each blank there are four choices marked A), B), C) and D) on the right side of the paper. You should choose the ONE that best fits into the passage. Then mark the corresponding letter on Answer Sheet 2 with a single line through the centre. People have wondered for a long time how their personalities and behaviors are formed. It is not easy to explain why one person is intelligent and another is not,or why one is (62) and another ’is competitive. Social scientists are, of course, extremely interested in these types of questions. They want to explain why we possess certain characteristics and (63) certain behaviors. There are no clear answers yet, but two (64) schools of thought on the matter have (65) . As one might expect, the two (66) are very different from one another, and there is a great deal of (67) between proponents (支持者) of each theory. The controversy is often (68) to as "nature vs nurture". Those who support the "nature" side of the conflict believe that our personalities and behavior patterns are (69) determined by biological and (70) factors. That our environment has (71) , if anything, to do with our abilities, characteristics and behavior is central to this theory. Taken to an extreme, this theory maintains that our behavior is predetermined (72) such a great degree that we are almost completely (73) by our instincts. Proponents of the "nurture" theory, or, (74) they are often called, behaviorists, claim that our environment is more important than our biologically based instincts in determining (75) we will act. A behaviorist, B. F. Skinner, sees humans as beings whose behavior is almost completely (76) by their surroundings. The behaviorists’ view of the human being is quite (77) ; they maintain that, like machines, humans (78) to environmental stimuli as the (79) of their behavior. Neither of these theories can yet (80) explain human behavior. In fact, it is quite likely that the (81) to our behavior lies somewhere between these two extremes. That the controversy will continue for a long time is certain.
In her presentation. Penelope wants to
已婚妇女，32岁。1年前曾人工流产并行绝育术，近3月阴道不规则流血，妇科检查：子宫稍大、双附件区未查异常，尿 HCG(+)，胸片见右肺有1cm直径的两个阴影，边缘模糊。 可能的诊断是
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