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【判断题】
CSS3.0中新增的opacity属性用于实现网页元素的半透明效果,opacity取值为1完全透明的,反之,取值为0完全不透明的。A.
正确
B.
错误
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举一反三
【单选题】John and Mark became separated because ______.
A.
there wasn't room for both John and Mark on the buoy
B.
John couldn't control the coat and drifted away
C.
Mark thought it safe to stay on the buoy but John didn't
D.
John had to stay in the boat to radio for help
【简答题】When was the library opened? It was opened in ________________. .
【简答题】A．Mr. Mark has much more time. B．Mr. Mark has a wife to help him. C．Mr. Mark doesn't have as much as responsibilities the interviewee has. D．Mr. Mark is not a book lover.
【简答题】1.When
he reads a book, his habit is to make a mark ___ the meaning is unclear to him.A. there B. wherever C. the place D. in which
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