2. 外语
  3. Histocompatibility antigens that attack foreign tissue in the body cannot have been (i)____ through evolution expressly to (ii)_

Histocompatibility antigens that attack foreign tissue in the body cannot have been (i)____ through evolution expressly to (ii)_

admin2018-07-14  7
问题 Histocompatibility antigens that attack foreign tissue in the body cannot have been (i)____ through evolution expressly to (ii)____ organ transplantation; on the contrary, they have been found to facilitate many essential biological functions.
选项 A、designed...retain
B、produced…aid
C、developed…enhance
D、selected…promote
E、conserved…foil
答案E
解析 空格(ii)：
- 方程等号：分号，同义重复；cannot取反。
- 强词和时应：分号后强调facilitate，分号前也强调facilitate。空格(ii)对应facilitate根据cannot取反，填入一个负向词。retain保持，aid帮助，enhance增加，promote促进，foil破坏。选项E合适。
空格(i)：
- 方程等号：through表示方式方法，同义重复。
- 强词和对应：空格(i)和空格(ii)通过through取同，体现“不促进”。design设计(错)，produce生产(错)，develop发展(错)，select选择(错)，conserve保存(对)。综合空格(ii)，答案选E。
转载请注明原文地址:https://www.kaotiyun.com/show/OIVO777K
本试题收录于： GRE VERBAL题库GRE分类
0

GRE VERBAL

GRE

相关试题推荐
随机试题
最新回复(0)