The research scientists often meet with problems______new types of instrument fo

游客2025-03-19 31

问题 The research scientists often meet with problems______new types of instrument for their solution.

选项 A、requiring
B、required
C、to require
D、being required

答案 A

解析此题应选现在分词requiring，在句中作定语，修饰problems，相当于定语从句…problems which require．．．，因为它们在逻辑上是主动关系，所以应选现在分词。句意为：“科研人员常常遇到需要新型仪器才能解决的问题。”

转载请注明原文地址:http://tihaiku.com/zcyy/4004038.html

相关试题推荐

随机试题

最新回复(0)

Therearethreetrendsmostwidelyblamedforcausingenvironmentalproblems