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【判断题】
汽车轮胎按胎体结构不同可分为充气轮胎和实心轮胎A.
正确
B.
错误
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反馈参考答案：
举一反三
【单选题】Why do some students have to navigate school bureaucracy by themselves?
A.
No one else cares about that.
B.
Their parents don't know English.
C.
Their parents have limited time.
D.
Only students are allowed to do that.
【简答题】阴离子聚合引发剂是_____________给予体,___________试剂,属于碱类。
【单选题】Why do teachers give their students a huge lot of homework and examinations? 查看材料
A.
They have a strong sense of responsibility.
B.
They intend to inspire students' interest in learning.
C.
They are demanded to improve students' scores.
D.
They intend to have students work harder in school.
【简答题】能进行阴离子型聚合的单体在结构上都具有 基团,适合阴离子活性中心与双键进行亲核加成反应。阴离子聚合引发剂是电子 体,亲核试剂,属于碱类。
【单选题】Why do summer schools arrange visits and other activities for the students?
A.
To attract more students.
B.
To make the courses suitable for students of all levels.
C.
To let the students have a good rest.
D.
To help everyone to make new friends, have fun and improve their English.
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