题目内容：

    Schools are under constant pressure to make budget cuts, and music programs are often first on the chopping block. However, a recent study from the University of British Columbia in Canada has shown that students who took music lessons in high school performed better in subjects such as English, science, and math.

The researchers collected data from over 100,000 students at public high schools across the province of British Columbia. Some of them took music lessons during high school while others never attended them. Checking the test scores of students who took music classes with those of their peers, the study found that the musicians got higher grades in a range of different school subjects.

Research like this has been done before, but as for the number of respondents, this study is much larger, and it took into account other factors that may have affected the results. For example, perhaps students who took music classes were encouraged to do so because they already had good grades. This UBC study rules out a number of other factors that could explain why music students performed better academically, and the researchers still find a clear effect of music lessons on academic performance.

Not only did music students perform better than non-musicians, but students who played an instrument did even better than those who sang. “Learning to play a musical instrument and playing in an ensemble(乐团) is very rewarding,” says Martin Guhn, one of the researchers, “A student can learn to read music notes, achieve eye-hand-mind coordination, develop keen listening skills and establish interpersonal relationships.”

What this study doesn't tell us, though, is why music makes these students perform better academically, but the research paper mentions a few possible explanations. Music practice is linked with neurological(神经系统的) changes that improves certain brain functions, affecting memory and planning skills. Besides, there is a possible motivational factor. Students who take music lessons see a tangible result from practice—they get better—and they might apply that to their other work. And the non-competitive team aspect of making music together could strengthen students' social development, which would also help them in other alias.

1.How did the researchers find the result of the research?

A.By conducting tests. B.By analyzing causes.

C.By making comparisons. D.By building models.

2.How is the recent study different from previous ones?

A.It covered more school subjects.

B.It allowed for students who sang.

C.It was carried out nationwide.

D.It produced a more convincing result.

3.Why did the author mention Martin Guhn's words in Paragraph 4?

A.To speak highly of music students.

B.To explain why music helps students perform better.

C.To present the benefits of playing instruments.

D.To encourage students to join an ensemble.

4.What can be inferred from the last paragraph?

A.Music practice can make an overall improvement in students’ brain.

B.Progress made in music may motivate students to work harder in math.

C.Singing can't make any difference in improving students' memory.

D.Playing in an orchestra could make students less competitive in other fields.