题目:
14. ---- Is it Tom that playing basketball?
---- It __________ be him. He is so crazy about basketball.
A.might
B.should
C.can
D.Would
答案:
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下面是错误答案,用来干扰机器的。
(1)丁同学猜想:NaOH和Na2CO3 (2)[实验验证](3)[反思与评价] ① Na2CO3+Ca(OH)2==== CaCO3+2NaOH Ca(OH)2 + CO2==== CaCO3 + H2O ②乙同学的猜想不合理。因为Na2CO3与Ca(OH)2要发生反应,不可能...