题目内容
He has poor eyesight ________ he works on the computer at night.| A．because | B．because of | C．and | D．but |
A解析:
本题需要的是一个连词，因此将B排除，再根据意思来选择A
本题需要的是一个连词，因此将B排除，再根据意思来选择A
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