Robert F. Kennedy is cited because he ( ).

A. One can avoid a heart disease by eating less foods with little cholesterol.

B. One can avoid a heart disease by taking the doctor's advice to eat low cholesterol foods and anti-cholesterol drugs or both.

C. There has been good scientific evidence that cholesterol foods can produce the chance of suffering a heart disease.

D. People usually believe that cholesterol foods are directly linked to heart disease.

A. tests have been designed to settle the cholesterol dispute

B. drugs have been tested to reduce the amount of the substance in blood

C. low cholesterol foods or anti-cholesterol drugs or both can reduce the chance of a heart attack

D. none of the statements mentioned above is correct

A. blood disease

B. heart disease

C. infectious disease

D. mental disorder

A. eggs, meats and milk products

B. potatoes, green vegetables and tomatoes

C. corn, wheat and beef

D. sugar, rice and butter

A. eating less foods with a lot of cholesterol

B. eating less of low cholesterol foods

C. eating a lot of high cholesterol foods

D. eating drugs

A. They can't be bothered to design a business model.

B. They learn a lesson from the success of Facebook.

C. They will not make profits without drawing mass users.

D. They desire to receive an honorary degree from the alma mater.

A. confront with Blackboard as an equal

B. offer free service to the advertisers

C. cover businesses from courses to textbooks

D. Develop its own come-management software

A. increase fans in the faculty common room

B. launch its second version in 600 universities

C. make more classes from 600 institutions signed up

D. spread its influence within the same institution

A. Meet specific needs of students.

B. Learn useful information from friends.

C. Control the online class membership.

D. Monitor students' personal privacy.

A. It specializes in producing old hats.

B. It aims to improve the way universities work.

C. It invests $ 6m in the development of social network.

D. It promotes the communication among classmates.