2. 外语
  3. It is necessary that dental Atechnicians and others Bworking with X-rays limit Ctheir exposure to Dthis highly penetrating rays.

It is necessary that dental Atechnicians and others Bworking with X-rays limit Ctheir exposure to Dthis highly penetrating rays.

admin2019-07-01  52
问题 It is necessary that dental Atechnicians and others Bworking with X-rays limit Ctheir exposure to Dthis highly penetrating rays.
选项 A、 
B、 
C、 
D、 
答案D
解析 This is a singular demonstrative. The plural form is needed before highly penetrating rays. Correction: these
转载请注明原文地址:https://www.kaotiyun.com/show/SSfO777K
0

托福（TOEFL）

相关试题推荐
随机试题
最新回复(0)