The Bush Administration has been accused by Harry Reid of

单项选择题What was the aim of the investigation referred to in the passage

单项选择题The most detailed information about the woman robber is her ______.

单项选择题U.S. President urged the U.S. Congress to play a key role in the fight against ______ in Africa.

单项选择题People did not begin to use unmanned vehicles in undersea exploration until recently because of______.

单项选择题D