题目内容：

The National Park Service in the United States will mark its one hundredth anniversary in 2016. As it nears its second century, the Park Service plans to increase its educational programs for students and teachers.

The plans include transportation support for one hundred thousand students each year to visit national parks to learn about nature and history. Yellowstone is believed to have been the world’s first national park when it was established in 1872. Other students will get a chance to see parks in faraway places through Skype and other online programs.

The National Park Service also works with partners to provide education. One of its partners is a nonprofit organization called NatureBridge.  NatureBridge is  celebrating  its  fortieth anniversary and says one million young people have taken part in its programs. The organization works with students from kindergarten through twelfth grade and uses national parks as its classrooms. It provides field science programs at Yosemite National Park and four other locations in California and the northwestern state of Washington.

Now, NatureBridge is launching an East Coast center with a four­million­dollar grant from Google. The program will begin in April at the Prince William Forest Park in Virginia. Students stay for three to five days in NatureBridge programs. The activities are aimed at developing their science skills.  For example, they learn about different soils and study water quality under a microscope.

Jason Morris is executive vice president of NatureBridge.  He says when they are not sleeping, eating or in a laboratory, the students spend their  time outdoors. Julia Washburn is associate director of education and interpretation for the National Park Service. She says in a time of budget cuts, the agency has to find ways to still meet its goals. Ms. Washburn says one of the most important services that the Park Service provides every day is nature interpretation. Park rangers (公园管理员) try to make visiting the outdoors more meaningful. Interpretation is a form of informal education. Essentially, it is a word that we use for the people in parks that explain the park or help orient (确定方向) you. So park rangers are interpreters. They orient you to the place you are in and help you make connections, emotional and intellectual connections, with the place.

1.What’s the general idea of the passage?

A. National parks are used as outdoor classrooms for students.

B. Students are called on to be members of NatureBridge.

C. Some famous national parks in US are attractive to students.

D. Park rangers make visiting parks much more interesting.

2.Which of the following is the correct structure of the whole passage? (Para.＝Paragraph)

A.     B.

C.     D.