12. Everybody， please keep ________. It’s not allowed to make any noise in the reading room.

A. 　 intend

B. 　 intended

C. 　 intends

D. 　 intention

A. 　 Microsoft

B. 　 IBM

C. 　 Siemens

D. 　 Cisco.

A. 　 couldn’t; been

B. 　 can’t; gone

C. 　 can’t; been

D. 　 mustn’t; gone

A. 　 irritates

B. 　 irradiates

C. 　 aids

D. 　 brighten

A. 　 until

B. 　 while

C. 　 although

D. 　 because

A. 　影响

B. 　碰撞

C. 　打击

D. 　感化

A. 　 these findings can change the way that people think about autism

B. 　 people can believe in the McCarthy miracle cure

C. 　 people with autism can be cured by behavioral interventions

D. 　 people who seem to get better with autism are usually capable of thinking

A. 　 absolutely necessary

B. 　 easily forgotten

C. 　 difficult to map out

D. 　 a way to gain profits

A. 　 By making more Shu embroidery products.

B. 　 By making more logos for companies like Baidu.

C. 　 By teaching in different universities and communities.

D. 　 By encouraging young people to learn the skill.

A. 　 It will instantly decrease the unemployment rate.

B. 　 It will bring about a more complete recovery.

C. 　 It means the recession is becoming worse.

D. 　 It makes the return of full employment hopeless.