They took______measures to prevent poisonous gases from escaping.A、fruitfulB、be

游客2023-11-11 48

问题 They took______measures to prevent poisonous gases from escaping.

选项 A、fruitful
B、beneficial
C、valid
D、effective

答案 D

解析形容词辨析题。fruitful意为“有收获的”；beneficial意为“有益的”；valid意为“正当的，有根据的，有效的”；effective意为“有效的，起作用的”。根据句意，D为答案。

转载请注明原文地址:https://tihaiku.com/zcyy/3178837.html

相关试题推荐

随机试题

最新回复(0)

Thetouristispreventedfromenteringacountryifhedoesnothavea(n)passp