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Which subject do you like best? In American high school, most students take English, science, math and history. These are basic courses and each course is as useful as others. In English class, the students study grammar and famous literature（文學(xué)作品）. In science class, they study biology, chemistry and physics.

（A）History is more interesting for some students because they can learn about important events and places in the United States. Students take other courses, too. These are electives（選修課）. Some of them are music, home economics and computer science. Students don't have to take all of these courses. Some learn music （B） they feel It is more enjoyable. Some study computer science because they think it is more practical（實用的）. In each class, teachers give students exams. Some exams are more difficult than others, and even a good student can’t always do well.

1、What are basic courses in American high school?

                                               .

2、  What do the students study in science class?

                                               .

3、  Don’t teachers give students exams?

                                               .

4、  對（A）劃線部分提問。                                                      

5、  將（B）變?yōu)楹唵尉洹?/span>