1 . The sudden death of model-actor Godfrey warns that public awareness of first-aid procedures for heart attack victims ________.

A．need to improve

B．need to be improved

C．needs improve

D．needs improving

2 . Scientific research discovered that people who were sleep-deprived had a hard time ________ their urges for high - calorie snacks.

A．control

B．to control

C．controlling

D．controlled

3 . 只有在提高效益的基础上保持快速的经济增长，我们才能减轻就业压力，保持社会稳定。(Only) （汉译英）