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问题 单项选择题

* * 后穹窿穿刺术的护理，错误的是

A．术前要嘱患者排尿
B．应于 * * 后穹隆中央处以水平向后穿刺3～5cm
C．抽取标本液一般为5ml
D．术中应注意观察病人的面色、血压等情况
E．拔针后如有渗血，要压迫止血后再取出窥阴器

答案

参考答案：B

问答题 简答题

冲击式和反击式水轮机在能量转换上有何区别？
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单项选择题

It’s all annual back-to-school routine. One morning you wave goodbye, and that (1) evening you’re burning the late-night oil in sympathy. In the race to improve educational standards, (2) are throwing the books at kids. (3) elementary school students are complaining of homework (4) What’s a well-meaning parent to do.As hard as (5) may he, sit back and chill, experts advise. Though you’ve got to get them to do it, (6) helping too much, or even examining (7) too carefully, you may keep them (8) doing it by themselves. "I wouldn’t advise a parent to check every (9) assignment," says psychologist John Rosemond, author of Ending the Tough Homework. "There’s a (10) of appreciation for trial and error. Let your children (11) the grade they deserve. " Many experts believe parents should gently look over the work of younger children and ask them to rethink their (12) . But "you don’t want them to feel it has to be (13) ," she says.

That’s not to say parents should (14) homework-first, they should monitor how much homework their kids (15) . Thirty minutes a day in the early elementary years and an hour in (16) four, five, and six is standard, says Rosemond. For junior-high students it should be " (17) more than an hour and a half," and two for high school students. If your child (18) has more homework than this, you may want to check (19) other parents and then talk to the teacher about (20) assignments.

6（）

A.via

B.under

C.by

D.for
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