Beijing's first unmanned subway trains, which can run ______ without the control of any drivers, are expected to be put into operation next year.
________ is an unreasonable dislike of a particular group of people or things, or a preference for one group of people or things over another.
When you come across a new word , you should learn to guess the meaning of the word according to the ________ clues , which may be in the sentence that comes before the word.
I have got a few books on Chinese food. You can borrowif you like.
---What do you think of the decision made at the meeting yesterday? ---I think it could lead to seriousfor the future of the factory.
She isto household dust, so she often wears a hat when cleaning the house.