One day a dentist was starting his morning work. Suddenly a man ran in. His face was red and he could only say “Quick! Quick!” The dentist thought he must be very ill. His assistant helped to make the poor man sit in a chair. The dentist gave the man some medicine to make him sleep. Then, he looked into the man’s mouth and pulled out all the bad teeth. As soon as the man woke up, he said in a low voice, “Quick, doctor, quick.”

“It’s all right now,” the dentist told him. “It’s over.”

“You don’t understand,” said the man, “I came to tell you your house is on fire.”

根据短文内容,判断下列句子正（T）误（F）。

(    )1.The story took place (发生) in the afternoon.

(    )2.When the man ran in, the dentist thought he must be ill.

(    )3.The man went to sleep after he took some medicine.

(    )4.The dentist pulled all the teeth out of the man’s mouth.

(    )5.The man ran in to tell the dentist that his house was on fire.

在动压密封中，按密封面的润滑状态分，共分为（）润滑方式。

A.流体润滑、湿润润滑、混合润滑

B.边界润滑、间隙润滑、混合润滑

C.边界润滑、间隙润滑、表面润滑

D.边界润滑、流体润滑、混合润滑