推行单轨小车必须有足够的跟车人员,以保证随时将小车及物料等搬出()以外。
参考答案:线路
You _______ to tell him the news. It will make him sad.
A.needn’t
B.shouldn’t
C.couldn’t
D.don’t need
Passage Three
It can be inferred from the passage that______.
A.most people who have been polled believe that the problem of unemployment may not be solved within a short period of time
B.many farmers lost their land when new railways and factories were being constructed
C.in preindustrial societies housework and community service were mainly carried out by women
D.some of the changes in work pattern that the industrial age brought have been reversed