从甲、乙、丙、丁四位同学中选出两名参加跳绳比赛，不同的组队方案有[ ]
A．4种
B．6种
C．2种
答案：B
The country itself didn't have enough gas because of the war, so the government decided to ____ its gas supplies to other countries. [ ]
A. hide away
B. cut off
C. insist on
D. break up
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