单项选择题

Which is the topic sentence of the passage

A．The first sentence of the passage.
B．The third sentence of the passage.
C．The last sentence but one of the passage.
D．The last sentence of the passage.

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单项选择题

Who should be blamed for the death of Everett Emerson Hatcher

A．All of us.
B．One of the drug gangs.
C．Drug enforcement agent.
D．Middle-class suburban Americans.

单项选择题

In Paragraph 1, sentient things of our own making refer to ________.

A．extraterrestrial beings
B．human beings
C．our sense organs
D．mechanical devices made by man