单选题
What does"chief executives” at the end of the first paragraph mean?
A、
High-ranking officials in US corporations.
B、
Top-level US government officials like a defense secretary.
C、
US Presidents.
D、
Principals in US universities.
【正确答案】
C
【答案解析】
本题考查的是对U．S．chief executives的理解。美国的最高行政长官自然是美国总统。
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