"Food Safety"problem is becoming ______ these days．
I think so．The government must do something to deal with it．（ ）
A．smaller and smallerB．worse and worse
C．better and betterD．nicer and nicer
相关试题
单缸四冲程内燃机工作时，依靠飞轮的惯性来完成的冲程有（）
| A．吸气、做功和排气冲程 | B．吸气、压缩和做功冲程 |
| C．压缩、做功和排气冲程 | D．吸气、压缩和排气冲程 |
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