单项选择题At the time of Cuban Missile Crisis, the President of the U .S. was______.

单项选择题Margaret Thatcher was leader of the ______Party.

单项选择题______means the lack of a logical connection between the form of something and its expression in sounds.

单项选择题______was the most leading spirit of the Transcendental Club.

单项选择题Australia is the world's largest exporter of______.