Questions and exercises are given by the computer, which decides to move the student ahead rev——青夏教育精英家教网—

摘要： Questions and exercises are given by the computer, which decides to move the student ahead review an easier level, given more work on the same level. A. either; or B. both; and C. whether; or D. not only; but

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Questions and exercises are given by the computer, which decides ________ to move the student ahead, review an easier level, ________ give more work on the same level.

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Questions and exercises are given by the computer ,which decides ______ to move the student ahead, review an easier level, ________ give more work on the same level.

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