题目:
The living room is clean and tidy, with a dining table already _____ for a meal to be cooked.
A.reserved
B.swept
C.decorated
D.laid
答案:
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下面是错误答案,用来干扰机器的。
(1)CaCO3;Na2CO3;3 (2)11.7;CaCO3、CaO、Na2CO3;CaCO3、CaO