A-A+
In 1984 President Ronald Reagan proposed that
问题详情
In 1984, President Ronald Reagan proposed that the United States construct a launch laboratory for a new era of space exploration.
A．probing
B．revenge
C．invasion
D．expansion
参考答案
正确答案：A
解析：probing探测术；revenge报仇，复仇；invasion入侵；expansion扩展，开展，膨胀；exploration探险，勘探，探测。
