【判断题】【消耗次数：1】
消除干扰源，尤其内部干扰，不能通过人为努力消除。
①
正确
②
错误
参考答案：
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随机题目
【单选题】
When a fire____ at the National Exhibition in London, at least ten priceless paintings were completely destroyed.
①
broke off
②
broke out
③
broke down
④
broke up
【单选题】
What a bad memory I’ve got! I even forgot ______ the book with me.
①
took
②
taking
③
take
④
taken
【单选题】
As the bus came round the comer, it ran _______ a big tree by the roadside.
①
over
②
on
③
into
④
up
【判断题】
判断线上的内容是否正确：If I have any comments to make, I’ll write them in the ___margin___ of the book I’m reading
①
正确
②
错误
【判断题】
判断线上的内容是否正确：Parents should actively urge their children to__keep track of____the opportunity to join sports teams.
①
正确
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【判断题】
判断线上的内容是否正确：A New Zealand man was recently ____sentenced_____ to life imprisonment for the murder of an English tourist， Monica Cantwell.
①
正确
②
错误
【判断题】
判断线上的内容是否正确：It is often the case___as ___anything is possible for those who hang on to hope.
①
正确
②
错误
【单选题】
Computer software _____ some 70 percent of our range of products.
①
picks up
②
focuses on
③
accounts for
④
is based on
【单选题】
The manager showed the new employee _______ to find the supplies.
①
what
②
where
③
that
④
which
【单选题】
We agreed to accept ____ they thought was the best guide.
①
whatever
②
whomever
③
whichever
④
whoever