A bone marrow test, (what) (involves) extracting fluid from the marrow, (maybe)

游客2025-03-12 70

问题 A bone marrow test, (what) (involves) extracting fluid from the marrow, (maybe) necessary (for diagnosing) leukemia.

选项 A、what
B、involves
C、maybe
D、for diagnosing

答案 A

解析 what不引导定语从句。引导非限制性定语从句应用which。改“what”为“which”。

转载请注明原文地址:https://www.tihaiku.com/zcyy/3994008.html

相关试题推荐

随机试题

最新回复(0)

Thesimplicityofthetheory—itsmainattractionisalsoits(i)____,foronlyb