题目内容：

    You return from work on a hot August evening. Your unwashed teenage son is on the sofa scrolling through Instagram, as he has been doing for the past eight hours. Not for the first time, you ask yourself: why are school summer holidays so insufferably long?

This is a more serious question than it sounds. Many children will return from the long break having forgotten much of what they were taught the previous year. One study from the American South found that this "summer learning loss" could be as high as a quarter of the year's education. Poor children tend to be the worst affected, since rich ones typically live in homes full of books and are packed off to summer camp to learn robotics, Latin or the flute.

Summer holidays vary greatly from country to country. South Korean children get only three weeks off. Children in Italy and Turkey get a whopping three months. So do those in America, where their parents, unless they are teachers have an average of only three weeks off a year, among the shortest holidays in the rich world. Companies should let them take a bit more, since burnt-out workers are less productive. But, for their children six weeks out of class is plenty.

Youngsters will hate the idea of a longer school year. Sceptics note that, although those barely rested South Korean pupils do superbly in exams, they are often miserable. It would be unwise to import South Korea's pressure-cooker approach, in which a single exam determines every child's future. But plenty of Western children could usefully spend a bit longer at their books.

More time in school need not mean repeating the same old lessons. Some extra drilling would be beneficial, particularly for those falling behind. But the summer could also be a time for different wind of learning: critical thinking, practical skills, financial literacy, work placements with local firms — schools should be free to experiment.

 

1.The author mentions the experience in the first paragraph to introduce teenagers'______.

A.long school summer holidays B.addiction to smartphones

C.unwillingness to learn D.unhealthy lifestyles

2.What do we know about "summer learning loss"?

A.It affects only children from poor families.

B.It results from children's poor memory.

C.It could be as high as half of the year's learning.

D.It can be reduced by spending more time learning.

3.In the author's opinion, how long is the summer holiday supposed to be?

A.Three weeks. B.Six weeks.

C.Two months. D.Three months.

4.What is the author's suggestion?

A.Schools should try new approaches to teaching.

B.Schools should provide more exams for students.

C.Schools should think about how to make the best use of the summer time.

D.Schools should offer more materials for students to do laboratory experiments.