A-A+
The underlined his in line 3 paragraph 9 r
问题详情
The underlined "this" in line 3, paragraph 9 refers to ______.
A．some foreign Power.
B．the security system of some nuclear plants.
C．sabotage by some foreign Power.
D．the attack by some terrorists.
参考答案
正确答案：C
解析：理解题。根据推理，“this”指代的是前一句话中“prevent”的宾语。
