GWD17-Q29 请求赐教。

tengjunshan

GWD17-Q29
Educational Theorist:
Recent editorials have called for limits on the amount of homework assigned to children. They point out that free-time activities play an important role in childhood development and that large amounts of homework reduce children’s free time, hindering their development. But the average homework time for a ten year old, for example, is little more than 30 minutes per night. Clearly, therefore, there is no need to impose the limits these editorials are calling for.
Which of the following is an assumption on which the educational theorist’s argument relies?

A.    The free-time activities that ten year olds engage in most are all approximately equally effective at fostering development
B.    Regularly doing homework assignments improves children’s academic performance.
C.    Individual teachers are not the best judges of how much homework to assign the children they teach
D.    In most schools, if not all, the homework assignments given are of a length that does not diverge widely from the average.
E.    Free-time activities rarely teach children skills or information that they can use in their academic work.

答案是D，
我选A
D的中文意思不是很明白，语法掌握不全面，“ if not alll”,是插入语？在这表达什么意思？
万分感谢。

sindyxu2009

GWD17-Q29
Educational Theorist:
Recent editorials have called for limits on the amount of homework assigned to children. They point out that free-time activities play an important role in childhood development and that large amounts of homework reduce children’s free time, hindering their development. But the average homework time for a ten year old, for example, is little more than 30 minutes per night. Clearly, therefore, there is no need to impose the limits these editorials are calling for.
Which of the following is an assumption on which the educational theorist’s argument relies?

A.    The free-time activities that ten year olds engage in most are all approximately equally effective at fostering development
B.    Regularly doing homework assignments improves children’s academic performance.
C.    Individual teachers are not the best judges of how much homework to assign the children they teach
D.    In most schools, if not all, the homework assignments given are of a length that does not diverge widely from the average.
E.    Free-time activities rarely teach children skills or information that they can use in their academic work.

答案是D，
我选A
D的中文意思不是很明白，语法掌握不全面，“ if not alll”,是插入语？在这表达什么意思？
万分感谢。

-- by 会员 tengjunshan (2010/8/17 18:49:20)

觉得"if not all "是用来说学校的，即“如果不是在所有的，那么也是在绝大部分学校里，布置的作业的长度都没有偏离平均水平太多”

JuggernautZNJ

if not all,是插入语，"在大部分学校里，即使不是全部，....."

tengjunshan

got it!!!thx!!!! really appreciate it!!

Titlis

逻辑不出来，为什么选 D。