题目内容：
Nowadays，scientists are working hard to find a best way of treating addictions ________ drugs.A．ofB．inC．onD．to
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单选题：Nowadays，scientists are working hard to find a best way of ..
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As for Latin America generally, there’s no reason why, ____..
As for Latin America generally, there’s no reason why, ____resources available, it can’t become a highly industrialized area．A．in honor ofB．in favor ofC．in terms ofD．in charge of
In order to get good marks, he has changed his attitude ____..
In order to get good marks, he has changed his attitude ______ study.A．aboutB．ofC．toD．on
I’m sure he will finish the report .A．after two hoursB．in..
I’m sure he will finish the report .A．after two hoursB．in two hours timeC．within two hoursD．two-hour later
The time that she devotes ________ the comic stories is so m..
The time that she devotes ________ the comic stories is so much that she can’t spare any time to look after her baby.A．withB．inC．toD．on
— When do we need to pay the balance?— ____ September 30...
— When do we need to pay the balance?— ____ September 30.A．InB．ByC．DuringD．Within