影响混凝的主要因素包括()。
A.pH值
B.水温
C.源水浊度
D.滤料
参考答案:A, B, C
Mike his wedding for a whole month and hopefully everything will be ready tomorrow.[ ]
A. prepares
B. is preparing
C. had prepared
D. has been preparing
写作(50分)
以“生命的化妆”为题写一篇文章,600字左右。