2. 外语
  3. The thymus gland,______is located in the upper part of the chest, produces cells that help fight infection.

The thymus gland,______is located in the upper part of the chest, produces cells that help fight infection.

admin2019-07-01  35
问题 The thymus gland,______is located in the upper part of the chest, produces cells that help fight infection.
选项 A、it
B、who
C、that
D、which
答案D
解析 Which agrees with its referent, the thymus gland.
转载请注明原文地址:https://www.kaotiyun.com/show/IqfO777K
0

托福（TOEFL）

相关试题推荐
随机试题
最新回复(0)