从事研究不同年龄人的心理发展特点，运用教育和培训手段，帮助人们形成健全的人格和正常的心理过程

The road is _______ to traffic due to construction.

A: closed

B: close

C: closing

D: closely

______the road until you get to the church, then trun left.

A．Change

B．Keep

C．Lead

D．Follow

It is not until the early 1970s that the Vietnam War was brought to a close by President

A．Joseph McCarthy.

B．Lyndon Johnson.

C．Richard Nixon.

D．Jimmy Carter.

They had an accident on the road and didn't______ at their hotel until after midnight.

A．show off

B．drop out

C．check out

D．check in

16. The road being built was scheduled to____traffic on May Day.

A.be close to B.be closed to C.be open to D.be opened to 

A．sphere

B．cone

C．pyramid

D．cube

Not until the First World War ______ to improve the road system in the United States.

A．a determined effort was made

B．made a determined effort

C．when a determined effort was made

D．was a determined effort made

If an adder hears you approaching, it will usually_____.

A．wait until you are close and then attack

B．disappear very quickly

C．take no notice of you at all

D．move out of your path

A．Because of

B．the

C．dropped food

D．close the city