题目内容
一Let’s start to make dinner!
一Mom , it’s best to read the instructions using the new microwave oven.
| A．before | B．but | C．and | D．or |
A
解析试题分析：句意：让我们开始做晚餐吧!妈妈,在用新微波炉之前最好先看看说明. A．before在……以前； B．but但是；C．and 和；D．or否则。结合句意，故选A
考点：考查连词的用法。
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