In many areas, rapid development is the result of ______ in the research laborat

游客2024-09-30 26

问题 In many areas, rapid development is the result of ______ in the research laboratory.

选项 A、work to do
B、work done
C、doing work
D、work doing

答案 B

解析这里是过去分词做名词work的后置定语。

转载请注明原文地址:http://tihaiku.com/zcyy/3780239.html

相关试题推荐

随机试题

最新回复(0)

Whytheexplosionoccurredwas______thelaboratoryattendantshadbeencareless.