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【单选题】
HTML5中,可替代 标记来定义页面底部的元素是A.
nav
B.
header
C.
aside
D.
footer
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反馈参考答案：
举一反三
【简答题】Five thousand miles is too far to travel.
【单选题】How fast will a rocket go to escape completely from the Earth's gravity?
A.
Seventy miles per second.
B.
Seven thousand miles per hour.
C.
Twenty-five thousand miles per second.
D.
Twenty-five thousand miles per hour.
【判断题】There are three types of cooperative learning groups: f ormal cooperative learning groups ; i nformal cooperative learning groups ; and c oo perative base groups .
A.
正确
B.
错误
【判断题】Once the agreement is settled, the contracts have to be written out and the economic contract should be signed in a n in f ormal way.
A.
正确
B.
错误
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