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

Which of the following statements is true

A．The author believes that there have been extraterrestrial beings visiting our planet.
B．The author and his wife talked about the refund in the driveway where nothing could hear them.
C．The author and his wife were overjoyed at the repayment from the IRS.
D．The author noticed that the refrigerator was overhearing his conversation with his wife.

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