单项选择题

Compared to alternative energy, one of the disadvantages of fossil fuels is ______.

A．Mining is difficult.
B．It costs a lot of money to preserve.
C．They are difficult to be processed.
D．They are non-renewable.
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单项选择题
The US Senate Arms Services Committee ______.
A．held confirmation hearing for Mr. Perrey
B．may have to decide whether to impose sanctions on North Korea
C．made discussions on whether to deploy Patriot Defense system to South Korea
D．made discussions on whether to deploy a single nuclear device to South Korea
单项选择题
Which of the following is TRUE
A．People evacuated from their homes can return now.
B．Flood waters arc receding in all parts of the upper mid-western United States.
C．Flooding is expected to continue for a few more days.
D．There was a record snowfall last year.
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