单项选择题

This type of apparatus can produce more than 40,000 blood ______ a day.

[A] examples
[B] models
[C] samples
[D] specimen
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单项选择题
Our picnic ______ by the unexpected heavy rain, we went home depressed.
[A] was spoiled
[B] had been spoiled
[C] having spoiled
[D] having been spoiled
单项选择题
They have decided to ______ physical punishment in all local schools.
[A] do away with
[B] carry away
[C] pat away
[D] pass away
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