Apple addicts refer to people who ______.

Some Internet addicts said their on-line usage was ______.

What can we learn about endorphins and Internet addicts from the text?

40. This passage is mainly about _______ . A) the use of the Internet B) the types of Internet addicts C) the advantages of the Internet D) the signs of an Internet addict A: B: C: D:

It is hard to move the Cake machine out of school because ______. A: it always brings in money more than students' tuition B: it is likely to cause students to become Coke addicts C: it can never be ignored as it brings funds to school D: it serves as the largest portion in school's business

The essence of a serious addiction is （）. A: the addict is looking for pleasure B: serious and does harm to the addicts C: a serious addiction has destructive features D: they are making comment jokingly on their likes E: it should not be criticized to pursue addictive pleasures F: his life is totally ruined G: all addictions have negative and positive aspects