. 质量相等的胺( C 4 H 12 N 2 )和尿素( CH 4 N 2 O )分别溶于 1000 g 水中,胺溶液的凝固点略高于尿素溶液。
A.
正确
B.
错误
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参考答案:
举一反三
【简答题】Paras. 26-32 When the narrator asks Polly to be his girlfriend, Polly refutes his first argument “We make a pretty good couple” as “ 1 _ ” and his second argument “You don’t have to eat a whole cak...
【简答题】Task 1: Filling the blanks based on your understanding of paragraphs 26-37. When the narrator asks Polly to be his girlfriend, Polly refutes his first argument “We make a pretty good couple” as “ ” ...