题目

阅读下面文章，回答有关小题，注意括号内的词数。 [1]A person searches various websites for different reasons, such as school, work, or entertainment. For teenagers, many informative resources on the Internet can be used. As a matter of fact, there are educational, music and art websites that are truly helpful to teenagers, because they can help ______________. [2]Educational websites are helpful to teenager in doing school work and searching for a college. Some can help studying for tests, explaining a lesson, and doing homework. Some can help find the right schoolsThe mechanics had to ________ the engine, and fix it, and put it together again. [　　] A．put downB．cut down C．shut downD．tear down