单项选择题

When you get a wrong number in making a long distance call, you are advised to ______.

A．hang up the receiver and call again
B．check the number and call again
C．tell the operator what has happened
D．ask the operator to put you through again

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热门试题

单项选择题

The speaker advises us to use the Earth's resources wisely because ______.

A．the Earth is heavily polluted
B．nature cannot recycle its resources
C．there are more and more people on the Earth
D．no more new resources can be added

单项选择题

What can we infer from the passage

A．Nature has changed our environment.
B．We have wasted resources and polluted our environment.
C．Our resources are nearly used up.
D．We have cooperated with nature well.