问答题

You’d better __________ (让机器一直开着).

【参考答案】

keep the machine running

<上一题目录下一题>

热门试题

单项选择题

By critical times (para. 2) the author means ______.

A．important stages in the child’s development
B．difficult periods in the child’s life
C．times when mothers often neglect their children
D．moments when the child becomes critical towards its mother

填空题

If excess leptin is present, the brain signals the body to increase food intake and to become more active.

相关试题