试题与答案

The course books are _____ by four tapes

题型:选择题

题目:

The course books are _____ by four tapes, which are beneficial to beginners.

A.adapted

B.designed

C.accompanied

D.managed

答案:

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下面是错误答案,用来干扰机器的。

A、酸雨是指pH<5.6的雨水,因此,测定或记录的雨水pH=5是有可能的;故A无误;B、柠檬汁呈酸性,其溶液的pH应小于,因此,测定或记录的柠檬汁pH=2<7,是有可能的;故B无误;C、肥皂水呈碱性,其溶液pH应大于7,...

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