Directions:There are 20 sentences in this part.For each sentence there are four choices marked A,B,C and D.Choose the ONE that best completes the sentence. ( 在下列各题中选择一个最佳答案填空。 ) 20%

1.A comparison of your offer ______ our regular suppliers shows that their prices are more favorable.

  A.with what of                  B.with that of

  C.with which of                 D.to that of

2.______ you make a 5% reduction,we will have to decline your offer this time.

  A.Unless                              B.When

  C.As                                D.Except

3.We shall appreciate ______ us with an opinion as to the credit standing of the firm.

  A.provided                           B.to provide

  C.your providing                       D.your provision

4.We have made it clear that the packing must be ______ to withstand rough handling.

  A.enoughly strong                          B.enough strong

  C.strongly                         D.strong enough

5.We are convinced that there is a considerable market waiting ______.

  A.developed                         B.to be developed

  C.develop                           D.to develop

6.We are sorry for our mistake in the number,______ resulted ______ your receiving the wrong goods.

  A.which … in                     B.this … from

  C.that