题目内容
（请给出正确答案）
What a role do lymphocytes play in the human body？
A To reduce the rate of dying while still a fetus.
B To raise the body’s immunity against infection.
C To help prevent the development of heart disease.
D To help prevent the development of diabetes.
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更多“What a role do lymphocytes pla…”相关的问题
When do actors play a role better, in the man’s opinion？
A．When they can identify with the character they are playing.
B．If they know what the audience wants.
C．If they are familiar with the plot of the play.
What will people do when someone breaks a role？
A．Criticize him or her.
B．Have a group discussion about it.
C．Make more roles.
D．Ask him or her to work more in the woods.
What is the role of Internet in software piracy？
A．It is a weapon against software piracy.
B．It is an accessory to software piracy.
C．It is the most important cause of software piracy.
D．It has nothing to do with software piracy.
What role do the plays in modem theatre play？
A．They set a bad example for people not to appreciate fine language.
B．They teach people best pronunciations.
C．They introduce English classical literature to the audience.
D．They tell people how to speak badly.
A.Designers.
B.Supervisors.
C.Assistants.
D.Employees.
What is the author trying to do with the example in paragraph 3？
A．Prove the idea that positive motivations are really needed for students.
B．Criticize the students about their lack of persistence faced with difficulties.
C．Show his pity on students' weak will power.
D．Reflect about our educational system and the role exams play in it.
