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．a(chǎn)nd D．or 

A

解析試題分析：句意：讓我們開始做晚餐吧!媽媽,在用新微波爐之前最好先看看說明. A．before在……以前；       B．but但是；C．a(chǎn)nd 和；D．or否則。結(jié)合句意，故選A
考點(diǎn)：考查連詞的用法。

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