1、单选题：
What is mainly introduced in this section? ( )
选项：
A:The suggestions on how to take this lecture
B:The importance of learning writing for practical purposes
C:The basic principles of writing for practical purposes
D:The differences between school writing and writing in the workplace.
答案: 【The basic principles of writing for practical purposes】

2、多选题：
Which of the following basic principles of writing for practical purposes are mainly introduced in this section?（ ）
选项：
A:clarity
B:Correctness
C:Conciseness
D:Concreteness
答案: 【clarity;
Correctness;
Conciseness;
Concreteness】

3、多选题：
What should you do to limit your writing to necessary words? ( )
选项：
A:Use only simple language at work.
B:Cut out unnecessary repetition.
C:Remove fillers.
D:Remove unneeded prepositional phrases.
答案: 【Cut out unnecessary repetition.;
Remove fillers.;
Remove unneeded prepositional phrases.】

4、判断题：
To achieve conciseness when writing at work, you are suggested to avoid using fancy words when plain words will do. （ ）
选项：
A:对
B:错
答案: 【对】

5、判断题：
Mistakes in punctuation, grammar and spelling are less serious in writing at work than in writing at school. ( ）
选项：
A:对
B:错
答案: 【错】