A-A+
Recent research into aging suggests that the b
问题详情
Recent research into aging suggests that the body"s defense mechanisms may lose the ability to distinguish what is alien.
A．insane
B．infectious
C．foreign
D．poisonous
参考答案
正确答案：C
解析：insane患精神病的，极度愚蠢的；infectious有传染性的，易感染的；foreign外国的，异质的；alien外来的，不同的。
