支配第3—4蚓状肌的神经是（）
A．桡神经深支
B．肌皮神经
C．正中神经
D．尺神经
E．桡神经浅支
相关问题推荐
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嗜酸粒细胞增多常见于（）
A．食物或药物过敏
B．慢性粒细胞自血病
C．支气管哮喘和荨麻疹
D．血吸虫和肺吸虫
E．皮肤湿疹或皮炎
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胃右动脉起自（）
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对近视眼的叙述，下列选项错误的是（）
A．眼球前后径过长
B．可用凸透镜矫正
C．眼的折光力过强
D．可用凹透镜矫正
E．平行光线聚集于视网膜前
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The reason for the old woman's secret burial was that the three women ______.
A. were too sad to let the public know it
B. had no money to arrange for a public funeral
C. wanted to collect the old woman's pension
D. were afraid that they might be put into prison
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It's an annual back-to-school routine. One morning you wave goodbye, and that (21) evening you're burning the mid-night oil in sympathy. In the race to improve educational standards, (22) are throwing the books at kids. (23) elementary school students are complaining of homework fatigue. What's a well-meaning parent to do?
As hard as (24) may be, sit back and chill experts advise. Though you've got to get them to do it, (25) helping too much, or even examining answers too carefully, you may keep them (26) doing it by themselves. "! wouldn't advise a parent to check every 27 assignment," says psychologist John Rosemond, author of Ending the Tough Homework, "There's a (28) of appreciation for trial and error. Let your children (29) the grade they deserve."
Many experts believe parents should gently look over the work of younger children and ask them to rethink their (30) . But "you don't want them to feel it has to be (31) ," she says.
That's not to say parents should (32) homework—first, they should monitor how much homework their kids have. Thirty minutes a day in the early elementary years and an hour in (33) four, five, and six is standard, says Rosemond. For junior-high students it should be" (34) more than a hour and a half," and two for high school students. If your child consistently has more homework than this, you may want to check (35) other parents and then talk to the teacher about reducing assignments.
21.
A. very
B. exact
C. right
D. usual