___ with the size of the whole earth, the biggest ocean does not seem big at all.

A. Compare           B. When comparing       C. Comparing       D. When compared

 The theory he's stuck _____________ us that earthquake can be forecast.

A. to proves          B. to prove             C. to proving      D. to proved

 About one third of the population in Beijing and Shanghai_________ netizens, but in poorer areas, only three or four percent _________online.

A. is; is             B. are; are             C. are; is         D. is; are

 Professor Smith,  along with his assistants,            on the project day and night to meet the deadline.

A. work               B. working              C. is working      D. are working

 On each side of the street _______a lot of trees.

A. stands             B. stand                C. is standing     D. are grown

 No freshman and no graduate _______ to sit in on the forum.

A. are allowed        B. is allowed           C. are agreed      D. is agreed

 E-mail, as well as telephones, ____an important part in daily communication.

A. is playing         B. have played          C. are playing     D play

 The company had about 20 notebook computers but only one-third ___________ used regularly. Now we have 60 working all day long.

A. is                 B. are                  C. was             D. were

 Three students in ten will go and _____ to stay in the classroom.

A. the rest are                     B. the rest is

C. the other are                    D. the other is

 As you can see，the price of pork，eggs and grain rising these days.

A. are keeping        B. keep                 C. keeps           D. were keeping