5. Under an unstable economic environment, employers in the construction industry place great value on ______ in hiring and laying off workers as their volumes of work wax and wane.
13. The attempt and offer to carry out cloning experiment on human being is blameworthy and can hardly find any ______ among the public not only in our country but also in most of the countries in the world.
16. It is increasingly believed among the expectant parents that prenatal education of classical music can ______ future adults with appreciation of music.
16. Unfortunately, the bridge under construction clasped in the earthquake, so they had to do the whole thing again from scratch.
A.from the beginning
B.from now on
C.from time to time
D.from the bottom
A B C D
A
[解析] 题意:不幸的是,修建中的桥在地震中坍塌了,他们不得不从头开始。划线单词from scratch的意思是“从头做起,从零做起”,与from the beginning同义。from now on“从现在”;from time to time“时不时,经常”;from the bosom“从底部”。故本题选A。
17. Sometimes the messages are conveyed through deliberate 'conscious gestures', other times, our bodies talk without our even knowing it.