异丁烯和少量的异戊二烯选用SnCl4-H2O为引发剂,在二氯甲烷中反应,该反应属______聚合,其产物称为______。
第1题
A、difference
B、distinction
C、DO NOT CHOOSE THIS OPTION!
D、THIS EITHER.
第2题
A.preference
B.push
C.priority
D.privilege
第3题
A.preference
B.push
C.priority
D.privilege
第4题
A.The cold war being over
B.The cold war had over
C.With the cold war was over
D.With the cold war has been over
第5题
Where do you think the conversation most likely takes place?
A.In a restaurant.
B.At the airport.
C.In a travel agency.
第6题
Where do you think the conversation takes place?
A.A post office.
B.A bank.
C.A shopping center.
第7题
You should carefully think over _____ the manager said at the meeting.
A.that
B.which
C.what
D.whose
第8题
What does the writer think of the American customer service?
A.It takes advantage of shop assistants.
B.It has been dreamt of by the Europeans.
C.It may not be suitable to the European society.
D.It is not applicable in times of economic difficulty.
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