O2O即Online To Offline（在线离线/线上到线下)，是指将线下的商务机会与互联网结合，让互联网成为线下交易的平台。（)

Please fill ______ this online application form.

A．up

B．on

C．out

D．with

One of the good aspects of online distance learning is _________.

A．speed

B．convenience

C．easy operation

D．variety of instruction

Sometimes online distance learning can be a problem because _________ .

A．learners can’t afford it

B．learners get too many hints

C．it involves excessive writing

D．it is not available at the weekend

What kind of students may NOT like online distance learning？

A．Those busy with their schedules.

B．Those in need of further education

C．Those unable to attend regular classes.

D．Those in favor of face-to-face teaching.

A.O2O

B.B2G

C.C2C

One hundred online courses make fl Harvard education_________ worldwide．

A．valuable

B．allowable

C．accessible

D．knowledgeable

A.美团网

B.洋码头

C.酷朋网

D.猫眼电影

A.B2C

B.C2C

C.O2O

D.B2B