[多项选择]College students are being encouraged to do volunteer work in western China. Is it really worthwhile to spend a year or two volunteering in an, underdeveloped region Write an essay of about 400 words to state your view.
In the first part of your essay you should state clearly your main argument, and in the second part you should support your argument with appropriate details. In the lost part you should bring what you have written to a natural conclusion or make a summary.
You should supply an appropriate title for your essay.
Marks will be awarded for content, organization, grammar and appropriateness. Failure to follow the above instructions may result in a loss of marks.

[填空题]She encouraged her students to give their opinions, and she always listened （）. (attentive)

[填空题]Students of our school are encouraged to do independent thinking, and______(不受老师观点的束缚).

[填空题]The teacher encouraged his students (speak)（）up bravely.

[填空题]The teacher encouraged his students (speak) ______ up bravely.

[单项选择]College professor: College students do not write nearly as well as they used to. Almost all of the papers that my students have done for me this year have been poorly written and ungrammatical.
Which one of the following is the most serious weakness in the argument made by the professor
A. It requires confirmation that the change in the professor’s students is representative of a change among college students in general.
B. It offers no proof to the effect that the professor is an accurate judge of writing ability.
C. It does not take into account the possibility that the professor is a poor teacher.
D. It fails to present contrary evidence.
E. (E) It fails to define its terms sufficiently.

[填空题]College students do not admit they are Internet addicts in the presence of people, but they ______.

[单项选择]What will the college students do for the high school students
A. Employ them as lab assistants.
B. Teach classes at their high school.
C. Help them with their studies.
D. Pay them for participating in the study.

[单项选择]How many 2-year college students do not have the ability to figure out a tip（　）.
A. 50%
B. 75%
C. 70%
D. 85%

[单项选择]What did Linda do after graduating from college