题目内容：

    In colleges around the country, most students are also workers.

The reality of college can be pretty different from the images presented in movies and television. Instead of the students who wake up late, party all the time, and study only before exams, many colleges are full of students with pressing schedules of not just classes and activities, but real jobs, too.

This isn't a temporary phenomenon. The share of working students has been on the rise since the 1970s, and one-fifth of students work year round. About one-quarter of those who work while attending school have both a full-course load and a full-time job. The arrangement can help pay for tuition （学费） and living costs, obviously. And there's value in it beyond the direct cause: such jobs can also be vital for developing important professional and social skills that make it easier to land a job after graduation. With many employers looking for students with already-developed skill sets, on-the-job training while in college can be the best way to ensure a job later on.

But it's not all upside. Even full-time work may not completely cover the cost of tuition and living expenses. The study notes that if a student worked a full-time job at the minimum wage, they would earn just over $15,000 each year, certainly not enough to pay for tuition, room, and meals at many colleges without some serious financial aid. That means that though they're sacrificing （牺牲） time away from the classroom, many working students will still graduate with at least some debt. And working full time can reduce the chance that students will graduate at all, by cutting into the time available for studying and attending classes.

There is little reward for attending but not finishing college. Students who end up leaving school because of difficulty in managing work and class are likely to find themselves stuck in some of the same jobs they might have gotten if they hadn't gone to college at all. The difficulty of working too much while in school can create a cycle that pushes students further into debt without receiving any of the financial or career benefits.

1.It can be learned from the passage that today's college students actually _______.

A.attend a number of parties B.work while attending school

C.stay up late all the time D.care little about exams

2.Which of the following factors indirectly causes more students to work?

A.The chance of finding a job after graduation.

B.The shortage of holiday jobs for college students.

C.The need of improving social skills.

D.The high tuition and living expenses.

3.According to the passage, we know that _______.

A.working students are more likely to graduate from college

B.the pay from working can cover students' college costs

C.working too much while in college may not benefit a student's career

D.students can receive a reward for managing work and class well

4.What is the best title for the passage?

A.An Introduction of Working College Students

B.The Advantages of Working While Studying

C.The Struggle to Balance Work and School

D.The Difficulties of Landing a Job