单项选择题
The computers available range from easy-to-learn ones to the most powerful ones.
A.现有的计算机有从简单易学到功能极强各种类型。
B.现有的计算机在简单易学和功能很强的范围内变化。
C.有效的计算机或者简单易学,或者功能极强。
D.计算机可提供给初学到能力极强的不同程度的人。
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单项选择题
— Is Philip over his cold yet — He ______. He went ice-skating yesterday.
A.had to
B.ought to
C.must be
D.must have
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单项选择题
______ I a billionaire, I would travel in space like an astronaut.
A.If only
B.Wishing
C.Were
D.Should
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