题目内容：

In Washington, DC, only 69 percent of public school students graduate from high school on time. Many factors influence that low rate. One of the most important ones is whether the people around the students expect them to succeed.

So, for the past 40 years, a DC organisation has stepped in to give around 10,000 students the support and positive environment they need to thrive (茁壮成长). This organisation, called Higher Achievement, provides students with a welcoming space, help with class work, and caring teachers. More than 95 percent of students who complete Higher Achievement graduate from high school on time.

Katherine Roboff is the group’s executive director in the DC area. She gives several reasons for the group’s success. One is timing. Higher Achievement does not work with students who are already in high school. It works with students in middle school. They start High Achievement at fifth or sixth grade—in the US, that is usually age 11 or 12.

Roboff says research shows that if students are doing well academically in eighth grade—around age 13—they will have a greater chance of graduating from high school and going to college. In other words, what happens in middle school has a huge impact. The years between ages 10 and 13 may affect a student’s future more than anything that happens academically in high school.

Roboff explains that students participate in Higher Achievement after school and during the summer, when public schools take a break of about two months. High Achievement students do homework, have community meetings, and work one-on-one with a mentor (导师).

“The purpose of the programme is to help them use those after school and summer hours to become better prepared academically and to develop their leadership skills and confidence so that by the time they get into eighth grade they are ready to get into some of the top high school.”

1.A little more than 30% of public school students in the US ______.

A. drop out of school

B. work hard at their lessons

C. can’t finish school on time

D. are expected to graduate from high school

2.What can we infer from the second paragraph?

A. Higher Achievement is a great success.

B. Higher Achievement works with college students.

C. Many students have doubts about the organisation.

D. Higher Achievement has spread throughout the US.

3.If students are doing well academically in eighth grade, ______.

A. they are certain to go to college

B. they are to succeed when they grow up

C. they don’t need any help in their studies

D. they are more likely to finish high school on time

4.What is the main aim of Higher Achievement?

A. To offer students advice.

B. To help student get into top schools.

C. To teach students how to behave at school.

D. To provide students with different activities.