Scientists are convinced ____ the positive effect of laughter ____ physical a
题型：同步题难度：来源：
| Scientists are convinced ____ the positive effect of laughter ____ physical and mental health. |
| [ ] |
A. of;at
B. by;in
C. of;on
D. on;at |
答案
| C |
举一反三
To put his wife _____ and to guarantee a promise of top secrecy, a husband may claim that a
life-threatening assignment is just a business trip. |
| [ ] |
A. in danger
B. on time
C. at ease
D. with ease |
| _____ , I prefer a comedy to a tragedy. |
| [ ] |
A. In detail
B. In general
C. On purpose
D. On time |
| I fell asleep while working on this paper____ the computer on. |
| [ ] |
A. as
B. for
C. over
D. with |
| ____, most teenagers now listen to rock music. However, John likes classical music better. |
| [ ] |
A. In a word
B. In general
C. In time
D. In total |
Jenny was a little nervous in front of so many strangers at first. But when she glanced at Jack,
she immediately felt _____ . |
| [ ] |
A. in peace
B. in need
C. at a loss
D. at ease |
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