女,38岁,贫血,血清铁5μmol/L,血清总铁结合力410μmol/L,血清铁蛋白10μg/L,网织红细胞计数0.015,血清铁饱和度1.5%,诊断为( )
A. 缺铁性贫血
B. 巨幼细胞性贫血
C. 自身免疫性溶血性贫血
D. 珠蛋白生成障碍性贫血
E. 阵发性睡眠性血红蛋白尿
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Research on animal intelligence always makes me wonder just how smart humans are. (51) the fruit-fly 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 (52) to live shorter lives. This suggests that (53) bulbs burn longer, that there is an advantage in not being too terrifically bright.Intelligence, it (54) , is a high-priced option. It takes more upkeep, burns more fuel and is slow off the starting line because it depends on learning—a (55) process—instead of instinct. Plenty of other species are able to learn, and one of the things they’ve apparently learned is when to (56) .Is there an adaptive value to (57) intelligence That’s the question behind this new research. I like it. Instead of casting a wistful glance (58) at all the species we’ve left in the dust I.Q.-wise, it implicitly asks what the real (59) of our own intelligence might be. This is on the mind of every animal I’ve ever met.Research on animal intelligence also makes me wonder what experiments animals would (60) on humans if they had the chance. 57().
A. invisible
B. limited
C. indefinite
D. different
I hope things would get better, but as it is they are getting worse.
M: Prof. Smith asked me to go to his office after class. So it is impossible for me to make it to the bar at 10:00.W: Then it seems we’ll have to meet an hour later at the library.Q: What will the man do first after class().
A. Go to the library.
B. Meet the woman.
C. See Professor Smith.
D. Have a drink in the bar.
M: Do we have to get the opera tickets in advanceW: Certainly! Tickets at the door are usually sold at a higher price.Q: What does the woman imply().
A. The tickets are more expensive than expected.
B. The tickets are sold in advance at half price.
C. It’s difficult to buy the tickets on the spot.
D. It’s better to buy the tickets beforehand.