For some time, Chinese people, under the leadership of CPC, ________ the contents of the Scientific Development Concept in the course of practicing socialism in China.
| A．had been improving | B．have been improving |
| C．were improving | D．improved |
“No bread eaten by man is so sweet as______ earned by his own labour. ”
| A．one | B．that | C．it | D．those |
_____ the majority of people you will meet when travelling are sure to be friendly, there are dangers-theft being the most common.
| A．Since | B．Unless | C．While | D．Once |
Water is the most widely used resource in ______ industry, and plays ______ major role in energy production.
| A．不填; a | B．the; a | C．an; 不填 | D．an; the |
The latest major disaster that occurred in Zhejiang paralyzed traffic, caused blackouts and ______ water supplies for days.
| A．cut down | B．cut off | C．cut up | D．cut out |
Children of divorced parents ______ have difficulty in forming stable relationships themselves.
| A．will | B．should | C．may | D．could |