In a persuasive letter, you should emphasize your primary appeal.（)

Which of the following is NOT a style. of business letters？

A、Formal letters

B、Short letters

C、Informal letters

D、Neutral letters

What are the speakers mainly talking about？

A．How to sell product lines.

B．How to write letters to clients.

C．How to do a customer survey.

D．How to announce a special price discount.

An identifier is a sequence of letters and digits，the first character must be(60)．

A．a letter

B．a string

C．an array

D．a interger

A.A. L/C is a self-sufficient instrument.

B.B. L/C is a document transaction.

C.C. The issuing bank's liabilities for payment.

D.D. L/C is a cargo transaction.

The duties of the secretary are to receive visitors, ______.

A．opening the mail, types letters

B．to open the mail and to type letters

C．to open the mail and to type letters

D．opening the mail type letters

for to

1.I will lend my car____you.

2.I will read the letter___them.

3.He is writing a letter______his boss.

4.He is going to tell the answer_____them.

5.They are making a cake___ Janet-it' s her birthday.

9. 一I mustpologize_____ you knowhed of time． 一Tht’sll right．for letting not B．for not letting C．to let not D．no

A．for letting not

B．for not letting

C．to let not

D．not to let

It is unnecessary to reply to an invitation when _________.

A．the invitation bears the letters "R. S. V. P"

B．you are very busy.

C．a great many people are invited.

D．the hostess wants to invite others.