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问题 单项选择题

男性患者，56岁，动脉粥样硬化性心脏病伴房颤，正在医院住院治疗，3天前突然发生左侧偏瘫及失语，意识清楚，脑膜刺激征阴性。最可能的诊断是

A．脑血栓形成
B．脑栓塞
C．脑出血
D．蛛网膜下腔出血
E．短暂性脑缺血发作

答案

参考答案：B

单项选择题 B1型题

既往感染乙肝，已获得特异性免疫力（）

A.乙肝五项为HBsAg、HBeAg、anti-HBc阳性

B.anti-HBs、anti-HBe、anti-HBc阳性、HBV-DNA阴性

C.anti-HBs阳性

D.anti-HAVIgM阴性、anti-HAVIgG阳性

E.HBsAg、anti-HBc阳性、anti-HCV阳性
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单项选择题

Research on animal intelligence always makes me wonder just how smart humans are. (91) the fruitfly experiments described in Carl Zimmer’s piece in the Science Times on Tuesday. Fruit flies who were taught to be smarter than the average fruit fly (92) to live shorter lives. This suggests that (93) bulbs burn longer, that there is an (94) in not being too terrifically bright.
Intelligence, it (95) , is a high-priced option. It takes more upkeep, burns more fuel and is slow (96) the starting line because it depends on learning—a gradual (97) —instead of instinct. Plenty of other species are able to learn, and one of the things they’ve apparently learned is when to (98) .
Is there an adaptive value to (99) intelligence That’s the question behind this new research. I like it. Instead of casting a wistful glance (100) at all the species we’ve left in the dust I.Q. wise, it implicitly asks what the real (101) of our own intelligence might be. This is (102) the mind of every animal I’ve ever met.
Research on animal intelligence also makes me wonder what experiments animals would (103) on humans if they had the chance. Every cat with an owner, (104) , is running a small-scale study in operant conditioning, we believe that (105) animals ran the labs, they would test us to (106) the limits of our patience, our faithfulness, our memory for terrain. They would try to decide what intelligence in humans is really (107) , not merely how much of it there is. (108) , they would hope to study a (109) question. Are humans actually aware of the world they live in (110) the results are inconclusive.

A．if

B．unless

C．as

D．lest
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