2. 职称英语
  3. Addition of any chemical compound to the environment in quantities ______ a sign

Addition of any chemical compound to the environment in quantities ______ a sign

游客2025-04-16  1
问题 Addition of any chemical compound to the environment in quantities ______ a significant fraction of the total content of gasoline may have unexpected environmental consequences.
选项 A、that constitute
B、which constitutes
C、that are substituted by
D、which substitute
答案 A
解析 语法结构要求时态统一，故选A。
转载请注明原文地址:https://tihaiku.com/zcyy/4039702.html
相关试题推荐
随机试题
最新回复(0)