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【单选题】
已知一对单体进行共聚合时获得了恒比共聚物，其条件必定是A.
r1 ＝ 1.5 ， r2 ＝ 0.5
B.
r1 ＝ 1.1 ， r2 ＝ 0.5
C.
r1 ＝ 0.5 ， r2 ＝ 0.5
D.
r1 ＝ 0.5 ， r2 ＝ 1.7
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反馈参考答案：
举一反三
【单选题】- What time are you going? - My plane leave at __________.
A.
twenty-five past seven
B.
ten and eight
C.
six past half
D.
half an hour
【简答题】根据观察记录,好奇的乐乐,进步的乐乐,请用100-200字分析乐乐的行为,并给出指导建议。
【单选题】-- My plane leaves at 7:25. -- _____
A.
OK.
B.
Well, goodbye and have a good trip!
C.
Why tell me?
D.
Remember to look me up.
【单选题】"---What time are you going? ---My plane leaves at ________"
A.
twenty-five past seven.
B.
ten and eight.
C.
six past half.
D.
half an hour.
【简答题】—_______ —What time are you going? —My plane leaves at 7:25.A. It’s nice to meet you all here B. It’s time to enjoy the delicious lunchIt’s time to enjoy the delicious lunch C. I haven’t thought that ...
【单选题】---What time are you going? ---My plane leaves at ________.
A.
twelve and eleven
B.
twelve past half
C.
half an hour
D.
twelve past twelve
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