题目内容：

    Finding time to do both homework and exercise is getting easier for students at a growing number of schools. Workout machines are appearing in many school libraries. The latest school to fix the Fit Desk Bike Desk is Troy University， which now has a total of six in the libraries. Over the past three years， the Bike Desks have also been fixed at four other universities.

The idea of pushing "active workplaces" is far from new. From standing offices to treadmill （跑步机）meetings， companies have been exploring the benefits of getting employees up from their desks-benefits that include higher morale （士气）and improved work performance. And a recent study that focuses on younger children suggests a strong connection between physical activities and good grades.

Chris Shaffer， who is director of library services at Troy University， says he thought it would be worth experimenting with the machines. "The final goal is to make the library a welcoming place that our students want to visit"， says Shaffer， "If we can find a way to let our students study and become healthier at the same time， then I am all for it. " He says the experiment is so successful so far that the university has ordered three additional Bike Desks.

Troy junior Niquette says the bikes have been in use every day he has visited the library. "Keeping a proper diet and exercise schedule during college is near impossible， "he says， "These offer a special way to study and I hope the university continues to add more." Senior Raven hasn't used the Bike Desks yet but says she wishes they'd been fixed sooner. "I remember being a junior and the gym is so crowded， with the smell of sweat， loud music and people moving around，" Raven says， "I think the machines are a great idea. You can do sports quietly while others focus on their study.

1.What can we learn from the first paragraph？ ______

A.University students are doing more exercise now.

B.Doing homework is easy for university students now.

C.Troy University introduced the Bike Desk to other schools.

D.Fixing workout machines in libraries is becoming popular.

2.What is the second paragraph mainly about？ ______

A.The types of exercise at workplaces.

B.The explanation of work performance.

C.The development of active workplaces.

D.The benefits of exercising during work and study.

3.What is the purpose of fixing the Bike Desks according to Shaffer？ ______

A.To make the library attractive to students.

B.To make students become healthier.

C.To help students to get good grades.

D.To do experiments on the machines.

4.What do Niquette and Raven think about the bikes？ ______

A.They are easy to ride.

B.They are really useful.

C.They make the library noisy.

D.They distract students.