单项选择题

A．The possible existence of life on other planets.
B．A technical problem that astronomers can’t solve.
C．Methods for building powerful new telescopes.
D．The discovery of planets orbiting distant stars.
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单项选择题
A．She does her shopping.B．She eats a lot of things.C．She drinks extra tea.D．She sleeps a great deal.
A．She does her shopping.
B．She eats a lot of things.
C．She drinks extra tea.
D．She sleeps a great deal.
单项选择题
A．He only works on new cars.B．He is one of her neighbors.C．He has fixed her car before.D．He will probably overcharge her.
A．He only works on new cars.
B．He is one of her neighbors.
C．He has fixed her car before.
D．He will probably overcharge her.
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