According to the passage, a person who is not willing to change his mind and hard to deal with, probably sleeps ______.

A．no heart disease will be found if people don't drink coffee
B．no one should drink more than two cups of coffee a day
C．the more coffee people drink, the more chance they'll get to have heart disease
D．women's heart disease has something to do with their drinking coffee

A．will send a group of Chinese scientists to pay a visit to the U.S. and Western Europe
B．will send some scientists to visit U.S. and the Western Europe
C．has expressed its strong wishes
D．has given many reports to improve the ties