The replacement of air-polluting cars by non-pollution cars will take some time.

admin2009-06-15  31

问题 The replacement of air-polluting cars by non-pollution cars will take some time.

选项 A、supplement
B、substitute
C、replenishment
D、complement

答案B

解析 replacement意为“代替品”,同substitute意思相同。其余选项 A意为“补充”;C意为“补给”;D意为“补给物”。
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