1、单选题：
While writing a business letter, the writer should keep the principle of ____ which requires relating the problem to have a head, tail, start to finish.（ ）
选项：
A:Correctness
B:Courtesy
C:completeness
D:Conciseness
答案: 【completeness】

2、单选题：
To avoid any ambiguity or misunderstanding, the business letter should adhere to the principle of_____（ ）
选项：
A:Courtesy
B:Completeness
C:Conciseness
D:Clearness
答案: 【Clearness】

3、单选题：
A business letter should be polite with a minimum of text to explain the meaning of the most complete. Being ___ can save time for both parties.（ ）
选项：
A:complete
B:concise
C:correct
D:courteous
答案: 【concise】

4、单选题：
We are pleased to ____ to your inquiry of August 18, 2017.（ ）
选项：
A:respond
B:regard
C:response
D:responding
答案: 【respond】

5、单选题：
Below you will find a facsimile of his ____, which I ask you to regard as my own.（ ）
选项：
A:sign
B:signature
C:sighing
D:signing
答案: 【signature】

6、单选题：
The use of ____ grammar would only reduce the reputation of your organization and yourself in the eyes of the recipient.（ ）
选项：
A:incorrect
B:correct
C:efficient
D:inefficient
答案: 【correct】

7、单选题：
Place the inside address at least ____ lines below the date.（ ）
选项：
A:three
B:four
C:two
D:one
答案: 【two】

8、单选题：
Make sure a person’s name is spelled correctly. A ____ may decide to ignore a letter that was written by someone who cannot spell his name.（ ）
选项：
A:recipient
B:writer
C:receipt
D:sender
答案: 【recipient】

9、单选题：
Do use a ____(Mr., Miss, Ms) to indicate your preference and you gender and give you First and Last Name.（ ）
选项：
A:title
B:addresser
C:signature
D:address
答案: 【title】

10、单选题：
The attention span of people is limited and they want to be able to read E-mail quickly. Therefore, use___ English as much as possible in your E-mail.（ ）
选项：
A:smart
B:complicated
C:professional
D:plain
答案: 【professional】