建立可靠的润滑保护膜，隔离相互摩擦的金属表面，是最无效，最不经济的措施

Dear Grace,

How are you? Thank you for your last e-mail. You want to know about my school clubs, right ? Well, it’s time for us to join the school clubs now. There are many clubs in my school, like the English club, the art club, the music club and the sports club. I have two good friends, Jack and Lisa. We all want to join the school clubs.

I want to join the music club, because I can play the guitar. I can’t speak English well, but I also want to join the English club.

Jack likes sports. He can play soccer and basketball. He is in the school soccer team(队). He wants to join the sports club. He can play the guitar, too. But he doesn’t want to join the music club.

Lisa likes drawing. She wants to join the art club. She also speaks English very well. I think she can be in the English club. But she can’t be in the music club. She can’t play any instruments(乐器).

Are there any clubs in your school? What club are you in?

Please write an e—mail and tell me about your school clubs.

Yours,

Jane

小题1:Grace wants to know Jane’s  _______ .

A．school clubs

B．school life

C．new friends

D．favorite sports小题2:Jane wants to join the _______  club.

A．art

B．sports

C．music

D．science小题3:下面哪项陈述是正确的？

A．Jack speaks English well

B．Jack is Jane’s good friend

C．Jack is in the art club

D．Jack can play the violin小题4:Lisa can NOT__________.

A．draw well

B．play the guitar

C．join the English club

D．speak English well小题5:Grace 下次给Jane写的邮件的主题可能是什么？

A．Grace’s birthday party.

B．Grace’s favorite subjects.

C．Grace’s school clubs.

D．Grace’s school day

工程师审查承包商提交的施工组织设计和进度计划时，认为承包商使用的施工设备数量不够而不能保证工程进度，则工程师（）。

A.有权要求增加施工设备，增加的费用由业主承担

B.无权要求增加施工设备，但有权要求加快施工进度

C.有权要求增加施工设备，增加的费用由承包商承担

D.无权要求增加施工设备，也无权要求加快施工进度

普惠制产地证申请书中Origin criterion的“P”表示( )

A．含进口成分

B．进口成分40%

C．无进口成分

D．无进口成分20%

如图所示，已知水在圆管中流动的流速分布公式为：u=2（1-r²/R²），R=0.05m，水的动力黏滞系数μ=1.14×10^-3Pa·s，气管壁处的切应力τ=（）。

A．0.0912Pa

B．0.912Pa

C．9.12Pa

D．0.0456Pa

在电子商务中，物流服务 包括商流服务。