考博考试

【单选题】 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

网考网参考答案：A
网考网解析：
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。 查看试题解析出处>>