2. 职称英语
  3. Medical research at the cellular level, ______research on the immune system, has

Medical research at the cellular level, ______research on the immune system, has

游客2025-02-07  28
问题 Medical research at the cellular level, ______research on the immune system, has been made possible through twentieth-century advances in techniques of genetic research.
选项 A、which
B、whereas
C、such as
D、is also
答案 C
解析
转载请注明原文地址:http://tihaiku.com/zcyy/3946750.html
相关试题推荐
随机试题
最新回复(0)