We place the first order on the clear understanding that the goods are dispatched in time to reach here by August 30, and reserve the right to cancel it after this date.（英译中)

A.fulfill

B.carrying out

C.execute

D.performing

A.A. where we visited

B.B. we visited in

C.C. we visited

D.D. which we visited

A.to be satisfactory

B.satisfaction

C.satisfied

D.satisfy

A、which

B、that

C、when

D、what

We use plastics _________ wood and metal now.

A. to take place B. to take of C. take the place of D. in place of

A.It is strange that how a spider protein initially into goat milk？

B.First, we investigated whether a spider protein can be expressed in goat milk.

C.At the very beginning we asked: How does a spider protein get into goat milk in the first place？

D.Firstly there is a question that how does a spider protein get into goat milk？

A.珍爱

B.漂移

C.回忆起

D.使倾向于

A．An informal invitation letter can be written either in the first person or in the third person．

B．Contents of an invitation letter should always include the purpose of the invitation, the place and the time of the event．

C．The tone of formal invitation letter tends to be oral, conversational, and friendly．

D．In invitation letter, it must be avoided to use the abbreviation form such as “I’m”, “I’ve”, “We’re”, “You’re”, etC．．