单选题 In American high schools, most students (41) English, science, math and history (历史,履历). These are basic (基础) courses and each course (过程,教程) is as (42) as the others. In English class, the students study grammar (语法) and read famous literature (文学). In science class, they study biology (生物学), chemistry (化学) or physics (物理). History is more interesting (43) some students because they (44) about important events (事件) and places in the United States. Students take other, courses, too. These are electives (先修课程). Some of them are music, home economics (家政学) and computer science. Students don't (45) take all of these courses. Some study music because they feel it is more (46) . Some study computer science because they think it is more practical (实用的). In (47) class, teachers give students exams. Some exams are (48) difficult than (49) , but a good student can (50) do well.

【正确答案】 C
【答案解析】后面一句说到These are basic (基础)courses and each course提示这些课程是基础课，应该是必修的。所以不能是喜好，而应该是take。
【正确答案】 A
【答案解析】考查同级比较的用法。as... as中间应该用形容词的原形。
【正确答案】 B
【答案解析】to some students 对某些学生来说。[A] at、[C] in 都没有这种用法。
【正确答案】 C
【答案解析】[A] know about，了解。[C] learn about，听说。选C最佳。如果选A与常理相背，因为学生如果know about 历史了，就不必选修它了。全句的意思大概是：对某些学生来说历史更加有趣因为他们听说过美国历史的重要事件和发生地点。
【正确答案】 C
【答案解析】have to，“必须”，强调来自外界的要求、义务，与本句的情景最吻合。
【正确答案】 B
【答案解析】“使人愉快的，可从中得到乐趣的”应该用[B] enjoyable。
【正确答案】 C
【答案解析】结合上下文，此处应该填“每一门课程”的意思。所以选[C] each。
【正确答案】 C
【答案解析】后面的“than”提示这里应该用形容词的比较级形式。
【正确答案】 B
【答案解析】这里并没有特指另外某一课程，所以用[B] others 而不用[A] the other。[C] other 是个形容词，后面应该接一名词。
【正确答案】 B
【答案解析】a good student 是不可能[A] never do well 的，而是[B] always do well，总是都能学好。