【判断题】【消耗次数：1】
高通滤波器允许低频信号通过，抑制或减弱高频信号。
①
正确
②
错误
参考答案：
复制
纠错
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—Did you enjoy your college life?—______.
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Yes, it was rich and colorful
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No, it is interesting
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I like my college very much
④
yes, it is.
【单选题】
The fact ________ that we are behind the other classes.
①
seems to be
②
must be
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remains
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take
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By _________ learning possible anytime and anywhere, distance education is a powerful tool for supporting lifelong learning.
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making
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make
③
made
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be made
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One big of formal education is the high cost.
①
advantage
②
disadvantage
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problem
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condition
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No more having to buy expensive textbooks which you will only use for a year or two and then sell or _______ away.
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get
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give
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take
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gain
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Lifelong learning is both formal and non-formal; and the boundaries between face-to-face teaching and ___________ education are increasingly blurred.
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lifelong
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formal
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distance
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far
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I hope you are making ________ for continuous education in your life.
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room
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vacancy
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place
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like
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Some universities offer free, non-credit MOOCs __________ to anyone in the world.
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useful
②
available
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easy
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careful
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Well, that’s to say, every coin has two sides, ________ technology.
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so is
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so does
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so has
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so did
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_________ the regular classes, you can also attend many different seminars and take part in many extracurricular activities.
①
Except for
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Including
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Apart from
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Included