问题 问答题 简答题

嗜酸性粒细胞在什么病理情况下增多或减少?嗜酸性粒细胞计数可动态观察哪些疾病?

答案

参考答案:

嗜酸性粒细胞绝对值>0.5×109/L为增多或减少。在变态反应、某些皮肤病、寄生虫病及血液病等时增多,其他如猩红热、X线照射、脾切除及传染病恢复期等因素均可使之增多。嗜酸性粒细胞少于0.05×109/L为减少,主要见于传染病急性感染期、严重组织损伤时及应用肾上腺皮质激素、垂体或肾上腺功能亢进等。计算嗜酸性粒细胞还可用于观察急性传染病和估计手术及烧伤病人的预后,以及测定肾上腺皮质功能。

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.off

B.behind

C.over

D.along

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