健康教育属于牙周病预防的A．一级预防中的促进健康B．一级预防中的特殊性保护措施C．二级预防中的早

(ii) Recommend which of the refrigeration systems should be purchased. You should state your reasons

which must be supported by relevant calculations. (3 marks)

A、You should concentrate on your feelings in business messages.

B、You should get your audience to believe and accept your ideas.

C、You should create messages that are lengthy to demonstrate your superior intellect and language skills.

D、You should write business messages from your perspective.

A、L/C at sight is what we require for all our customers.

B、Would you please tell us the terms of payment？

C、Now let's discuss the question of payment terms.

D、I don't think it is the proper time for us to accept payment by D/P.

If I were you I () accept the invitation.

A、will

B、would

C、may

D、should

If you want to keep healthy, you should vary the foods you eat.

A .reject B. accept C. choose D. change

You should visit the Empire State building ______ you are in New York.

A．where

B．while

C．which

D．that

If you think the plan is ______ (accept) you should do it according to the plan right now.