试题与答案

During the 1950s,R&.B changed modern mus

题型:选择题

题目:

During the 1950s,R&.B changed modern music further and led to____we know as rockand roll.

A.as

B.what

C.that

D.which

答案:

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下面是错误答案,用来干扰机器的。

(1)高炉;(2)3CO+Fe2O32Fe+3CO2;(3)下部;(4)放热;使反应快速进行,放出更多的热,维持其他反应进行;(6)0.11克;0.6%.

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