2013年GCT英语日常练习（8.5）
2013-08-05 8:42:45 www.gct-online.com
1. Their happiness was very____.
A. crisp B. brittle C. delicate D. fragile
2. I was awfully tired when I got home from work, but a half hour nap ____me.
A.revived B. released C. relieved D. recovered
3. We should always keep in mind that____decisions often lead to bitter regrets.
A.hasty B. instant C. prompt D.rapid
4. Information and opinion gap exercises have to have some content ____talking about.
A. worthwhile B. worthily C. worth D. worthy
5. “If we fail to act now,”said Tom, “We’ll find ourselves ____in action later on.”
A.paid back B. paid for C.paid up D.paid off
6. My grandfather accidentally ____ fire to the house.
A.put B. took C.set D. got
7. We enjoyed the holiday____the expense.
A.except B. besides C. in addition to D. except for
8. If you want children to work hard you must ____their interests instead of their sense of duty.
A. appeal to B. look into C. give rise to D. go in for
9. Basically a robot is a machine which moves, manipulates, joins or processes ____in the same way as human hand or arm.
A. characters B. components C.catalogues D. collections
10. Of course, talking about something which affects them personally is ____motivating for students.
A. chiefly B. correctly C. currently D. eminently
（本期答案明日公布）
8月3日参考答案：
1、【答案】C
【解析】设完成剩余的工程还需要的天数是x，则8×35=12（8+6）x，故x=40。
2、【答案】B
【解析】设人数为X个，有K个椅子，则有：2X+4（X-K）+3K=6X-K=43，从而知：X≥8且K≤8，综合分析，仅8符合题意，选B。
3、【答案】C
【解析】设最低定价为X元，已知：X≤21*（1+20%）；（X-21）（350-10X）≥400；由以上分析可知：X≤25.2；（X-25）（X-31）≤0；所以X≤25.2，同时25≤X≤31；所以：25≤X≤25.2，选C。
4、【答案】C
【解析】对于一个有限集合X，其所有子集的个数为2N，其中N为集合X所含元素的个数。由此可知，本题的答案是24，即选C。
5、【答案】C
【解析】试题主要考查一元二次方程的求解。根据题意，a+b2=2ab，整理得ab2-4ab+1=0，因为a>b，所以求解该方程得ab=2+3，于是ab=7+43≈7+4×1.7=13.8，故选C。
