问题解决的认知过程分为发现问题、______、提出假设和检验假设。

Playing video games on his iPad in a chair, Justin Bieber looks like any 16-year-old. But when he opens his mouth, you know he’s different – the Canadian teen can really sing.

Do you like listening to the songs of Justin Bieber? In his 3D documentary  , Justin Bieber: Never Say Never, now playing in US theaters, the 16-year-old Canadian sings the song Never Say Never. It’s an encouraging song.

Bieber uploaded a music video to the Internet three years ago, and since then has never looked back. He has sung at the White House, opened for Taylor Swift and appeared on the cover of People magazine, which called him the “world’s biggest pop star”. He has won many honors, the most recent being Best New Artist of the Year at 2010 MTV Video Music Awards.

There are many interesting things going on in Justin Bieber’s life these days. He has a girlfriend, actress and singer Selena Gomez. He just celebrated his 17th birthday. And, he has a new haircut. Bieber gave some of his hair to sell online. One of his fans bought  it for $40,000 (260,000 yuan)! The money will go to protect animals. What would you do with Bieber’s hair? 

小题1:Where is Justin Bieber from ?

A．America

B．Australia

C．Canada

D．Japan小题2:What’s the meaning of the underlined word “uploaded”?

A．下载

B．搜寻

C．上传

D．博客小题3:What’s the name of the song in his 3D documentary?

A. Baby    C. Smile    C. Just a dream    D. Never say never

小题4:What can learn from the passage?

A． Justin Bieber can sing as well as any 16-year-old.

B． He had sung at the White House three times.

C． His new girl friend is a writer.

D． One of his fans bought some of his hair .

动物行为的产生主要受______的控制，也受______的控制，二者共同协调，相辅相成．

Would you mind closing the door? __________. It is hot outside ,don’t let the cool air out.

A．No, you’d better not

B．No, not at all

C．Yes, never mind

D．Yes, of course not.

肝硬化食道静脉破裂大出血停止后，双气囊腔管放置与取出时间为（　）

A．放置24h，抽出气囊气体后观察12h无出血即可取出

B．放置48h

C．放置12h

D．放置48～72h，抽出气囊气体后观察12h目即可取出

E．以上均不对

森林资源经营管理主要包括哪几个方面的内容？