The OSI model has () layers.

-- My model plane has disappeared, mum. I Who ______ have taken it？

A．should

B．must

C．could

D．might

scale model of the Eagle to test his idea.

A．Right

B．Wrong

C．Not mentioned

businesses.

A．economize

B．economy

C．economical

D．economist

"An identifying figure" (Para. 5) refers to a person ______.

A．who serves as a model for others

B．who is always successful

C．who can be depended upon

D．who has been rewarded for his success

fort the body over long haul of flights．Besides，the redesigned working environment has met the approval of many experienced air hostesses and pursers．

(20)

A．Because General Motors doesn't have the democratic organisations in the company

B．Because giving up control would spread the information out in the open

C．Because the model has not been popular in the large companies

Advertisers would like to pay more to Joost because ______.

A．Joost has found a totally new business model

B．Joost will limit the number of its advertisements

C．Joost will improve the effect of advertisements

D．Joost is the best-known internet-video website

？

W: I'll be more than happy to give you any further information you need on it.

M: Well then, what are the specifications？ And what about the service life？

W: If I may refer you to Page eight of the brochure you will find all the specifications there. Our test indicates that this model has a service life of at least 5 years.

What are they talking about？

A．A woman model that the man is interested in

B．A model machine

C．A brochure

D．A model shelf

What does Paula think about remote employment？

A．It has a bright future.

B．It needs more mentors for instruction.

C．This model of work could substitute full-time jobs.

EXCEPT that she______.

A．is about of an age with the author

B．is glad to share everything she has with others

C．is ready to give a hand to others

D．has surmounted many difficulties