I hate travelling by air you usually have to wait for hours before the plane takes off.A．becauseB．thoughC．untilD．Unless 题目和参考答案——青夏教育精英家教网—

题目内容

I hate travelling by air_______ you usually have to wait for hours before the plane takes off.

A．because

B．though

C．until

D．Unless

试题分析：句意：我讨厌乘坐飞机旅行，因为通常在飞机起飞之前需要等好几个小时。A因为 B虽然 C直到D除非;根据题意，前面是结果，后面是原因，所以要用because。故选A.

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