单项选择题

In the second round of the elimination match, that famous athlete was ______and didn’t enter the final, which was really out of our expectation.

[A] knocked down
[B] knocked over
[C] knocked at
[D] knocked out
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单项选择题
How can you attract bar waiter’s attention in Britain
A．Adopting an impatient expression.
B．Putting your coins on the counter.
C．Showing your empty glass in front of the bar staff.
D．Telling your expectation to the bar staff.
单项选择题
By the end of this century intelligent robot ______ to do most of the housework for man.
[A] is expected to be invented
[B] will have been expected to be invented
[C] has been expected to be invented
[D] is expected to have been invented
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