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题目
题型:不详难度:来源:
Questions and exercises  are given by the computer, which decides ______ to move the students ahead, review an easier level, ____ give more work on the same level.
A.either, orB.both, and .C.whether, orD.not only, but also

答案
C
解析
Whether---or·---表选择。问题的给出是为了决定是提高水平还是做同一水平的题。故选C。
核心考点
试题【Questions and exercises  are given by the computer, which decides ______ to move】;主要考察你对连词等知识点的理解。[详细]
举一反三
 Hearing his words ,I couldn’t decide _____or remain .
A.whether to go abroad B.if I go abroad
C.if to go abroad D.to go abroad

题型:不详难度:| 查看答案
____he thought he was helping us with the work, he was actually in the way.            
A.AlthoughB.UnlessC.BecauseD.When

题型:不详难度:| 查看答案
 —When did he leave the classroom?
—He left _____you turned back to write on the blackboard.
A.the minuteB.the timeC.untilD.before

题型:不详难度:| 查看答案
 Jack had traveled six miles across the Channel  _____his engine failed and was forced to land on the sea .     
A.whenB.until C.after D.since

题型:不详难度:| 查看答案
 Not that I’m unwilling to lend you a hand , ____I’m too busy for the moment .
A.because B.but that C.but D.however

题型:不详难度:| 查看答案
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