It is clear that the whole world is passing through a social revolution in which a central _____ must be taken by scientists and technologists.
| A．process | B．attention | C．measure | D．part |
One of the consequences of our planet's being warming up is a（n）_______ in the number of natural disasters.
| A．result | B．account | C．reason | D．increase |
“I don't think it's my ________that the TV blew up. I just turned it on，that's all，”said the boy.
| A．error | B．mistake | C．fault | D．duty |
—I’m sorry I stepped outside for a smoke. I was very tired.
—There is no______ for this while you are on duty.
| A．reason | B．excuse | C．cause | D．explanation |
Chinese arts have won the______ of a lot of people outside China.
| A．enjoyment | B．appreciation | C．entertainment | D．reputation |
In dealing with public relations, we should make every effort to prevent the______ in personality.
| A．contact | B．contrast | C．connection | D．conflict |