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 In the USA, children start school when they are five years old. In some states(州) they must stay in school          they are sixteen. But most students are seventeen or eighteen years old when they          secondary(中等的) schools. There are two kinds of schools in the USA: public schools and private(私立的) schools.         children go to public schools. Their parents don’t have to         their education because the school get         from the government（政府）.

If a child goes to a private school, his parents have to get enough money for his schooling. Some parents         like private schools though they are much more expensive.

   Today about half of the high school students         in universities after they finish secondary schools. A student at a state university doesn’t have to pay very much         his parents live in that state. Many students         while they are studying at universities. In this way they get into         working habits(習(xí)慣) and live by their own hands.

1.A. and                               B. so                             C. until                                  D. since

2.A. leave                    B. enter                                C. reach                                D. pass

3.A. Several                         B. Most                                 C. A few                           D. Few

4.A. look up                         B. pay for                    C. ask for                         D. think over

5.A. books                            B. teachers                           C. food                                  D. money

6.A. still                                 B. never                                C. surely                          D. already

7.A. play                               B. change                        C. study                                  D. meet

8.A. before                          B. because                           C. because of                 D. though

9.A. smoke                           B. drink                                 C. fight                                  D. work

10.A. good                           B. bad                                    C. happy                          D. wrong

In the USA, children start school when they are five years old. In some states(州) they must stay in school          they are sixteen. But most students are seventeen or eighteen years old when they          secondary(中等的) schools. There are two kinds of schools in the USA: public schools and private(私立的) schools.        children go to public schools. Their parents don’t have to         their education because the school get         from the government（政府）.
If a child goes to a private school, his parents have to get enough money for his schooling. Some parents         like private schools though they are much more expensive.
Today about half of the high school students         in universities after they finish secondary schools. A student at a state university doesn’t have to pay very much         his parents live in that state. Many students         while they are studying at universities. In this way they get into         working habits(習(xí)慣) and live by their own hands.