
银行营业场所和文物系统博物馆的备用电源的容量,应能保证入侵报警系统正常工作()小时。
A.12
B.24
C.48


A.12
B.24
C.48
It’s an 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 be, 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 mom than an hour and a half,” and two for high-school students. If your child 18 has mom homework than this, you may want to check 19 other parents and then talk to the teacher about 20 assignment
very
B 、exact
C 、right
D 、usual
officials
B 、parents
C 、experts
D 、schools
Also
B 、Even
C 、Then
D 、However
fatigue
B 、confusion
C 、duty
D 、puzzle
there
B 、we
C 、they
D 、it
via
B 、under
C 、by
D 、for
questions
B 、answers
C 、standards
D 、rules
off
B 、without
C 、beyond
D 、from