Each new school year brings fresh reminders of what educators call the summer learning gap. Some call it the summer learning set-back. Put simply, it means the longer kids are out of school, the more they forget. The only thing they might gain is weight. Recent studies show that children gain weight more quickly in the summer than when they are in school.
Most American schools follow a traditional nine-month calendar. Students get winter and spring breaks and about ten weeks of summer vacation. Some schools follow a year-round calendar. They hold classes for about eight weeks at a time, with a few weeks off in between. But many experts point out that the number of class days in a year-round school is generally the same as in a traditional school.
Last year, a study at Ohio State University reported that year-round students did not learn any more than other students. Across the country, research shows that students from poor families fall farther behind over the summer than other students. Experts say this can be prevented. They note that many schools and local governments offer programs that can help.
In American culture, the idea of summer vacation is connected to beliefs about freedom and the joys of childhood. Research with groups of different parents in Chicago and Baltimore found that almost all strongly disliked the term summer school. They said it created an image of children being forced to do work they missed during the school year. The parents welcomed other terms like " summer camp " ，" enrichment " ，" extra time " and " hands-on learning " .
It can be inferred from Paragraph 1 that _________.

A．the educators in the US don't like long summer holiday

B．the students in the US learn nothing during their summer vacation

C．it's good for the students' health to spend long holiday

D．students are not ready to learn during the holiday by them-selves

According to the passage, which of the following is TRUE?

A．A student in a traditional nine-month school is fatter than one in a year-round school.

B．Most American schools make use of a year-round calendar.

C．The traditional nine-month calendar has an advantage be-cause they have more class days.

D．Students following a traditional nine-month calendar has at least 3 long holidays.

At the beginning of a new term, students from poor families—_________

A．are fatter than those from rich families

B．have a more serious summer learning gap than those from rich families

C．learn more knowledge than those from a year-round school

D．make more progress than those from a traditional nine-month calendar school

This passage mainly tells us _________.

A．the American summer schools

B．to mind the summer learning gap

C．how to lose weight during the summer vacation

D．schools and local governments should offer programs to help students from poor families