单项选择题
W: Why don’t you go into the room M: Oh, my key won’t turn in the lock. Will you help me
A．She can’t unlock the door. B．She has lost the key. C．She wants to wait till the man comes.
A．difficulty B．exactly C．easily D．only
A. the traditional misconception have about sleep B. the new sleep policy of the Clinton Administration C. the rapid development of American industry D. the Americans’ worry about the danger of sleepness