Watching bison up close is fascinating, like watching a grass fire about to leap out of control. With their huge, wedge-shaped heads and silver-dollar-size brown eyes, the 2,000-pound animals are symbols of another place and time. More than 100 bison now roam the 30,000-acre American Prairie Reserve in eastern Montana — the first time they’ve inhabited that region in a century. Direct descendants of the tens of millions of bison that once populated the Western plains, they represent an epic effort: to restore a piece of America’s prairie to the national grandeur that Lewis and Clark extolled two centuries ago. During that famous expedition across the Western states to the Pacific, the two explorers encountered so many bison that they had to wait hours for one herd to pass.

       In order to protect what’s here and reintroduce long-gone wildlife (something the World Wildlife Fund is helping with), the American Prairie Foundation began purchasing land from local ranchers in 2004. It now owns 30,000 acres and has grazing privileges on another 57,000. Its goal over the next 25 years is to assemble three million acres, the largest area of land devoted to wildlife management in the continental United States.

       Already, herds of elk, deer, and pronghorn antelope roam the grasslands, where visitors can camp, hike, and bike. Cottonwoods and willows are thriving along streams, creating habitats for bobcats, beavers, and other animals.

       Not everyone shares APF’s vision. Some residents of Phillips County (pop. 3,904) worry that the area could become a prairie Disneyland, overcrowded with tourists. But the biggest obstacle is the ranchers themselves, whose cattle compete with prairie dogs and bison for grass and space.

       “People like me have no intention of selling their ranches,” says Dale Veseth, who heads the Ranchers Stewardship Alliance of 35 families in Phillips County and whose family has been ranching here since 1886. “They’ve been a labor of love through the generations.” Instead, he wants APF to pay or subsidize ranchers to raise bison. This would be far less costly for the foundation, he argues, than buying the land directly.

If you go to the American Prairie Reserve in eastern Montana, you will see ________.

       A. the burning fire moving across the grassland

B. hundreds of bison travelling through the prairie

C. tens of millions of bison occupying the farmland

D. groups of experts examining the dead bison

What measures have been taken to protect the wildlife by APF?

       A. They have borrowed much money and developed new habitat.

B. They have hired many farmers to raise bison on their farms.

C. They have turned grassland into Disneyland to attract tourists.

D. They have bought large land from farmers for bison to live on.

The underlined word “subsidize” in this passage means ________.

       A. give money to                                             B. borrow money from

C. provide land to                                            D. exchange land with

Which would be the best title for this passage?

       A. The exciting scenery in eastern Montana

B. Great changes in raising bison in America

C. The return of the American prairie

D. The challenge in protecting the grassland

Invisible ink has fascinated kids for generations. You might think that it would be difficult to make, but it’s not.

All you’ll need for this experient is some milk; some white paper; a clean cotton swab (药签) or small, clean paintbrush; the kitchen stove; and help from an adult. The most difficult part of this mini-project is choosing the message that you’ll write with your invisible ink. Maybe you’ll want to pretend that you’re a spy on a secret mission, writing messages that would lead to big, big trouble if they were discovered. Choose your words carefully.

All you need to do is, using the brush of cotton swab, write your message with milk on the paper. Don’t use a lot of milk and soak the paper. Use just enough to make a thin coating.

Once you’ve finished writing, ask the adult who’s helping you to turn on the kitchen stove to a low heat. Very carefully, using kitchen mitts ,hold the paper about a foot above the warm burner. If you don’t see results, you may have to make the burner a little hotter.

Do not, however, hold the paper low over the burner. As the paper heats up, your message will become brown and you’ll be able to see what was written. You want to know why? It’s because chemical compounds in the milk have a low burning point. When the paper gets warm, those compounds will heat up and trun brown, while the paper will be unaffected.

You also can try this experiment with other liquids, such as orange juice, lemon juice, vinegar, and apple juice. Just be sure to follow all safety rules and have an adult around to help you.

60．What is probably the best title for the passage?

A. A Scientific Research                  B. Making Invisible Ink

C. How to Make a Spy                     D. A Classroom Experiment

61．Which is the right order of the process?

a. write words on the paper.        

b. get help from an adult.

c. get ready some milk, paper, cotton swab, etc.

d. hold the paper over the warm burner.

A. c,a,b,d.             B. b,c,a,d.             C. c,d,a,b.             D. a,c,d,b.

62．How can you see what is written on the paper?

A. Soak the paper into water to make it appear.

B. Wait till the paper is dry enough.

C.   Use some chemical compounds to make it appear.

D. Hold the paper above the warm burner to make it appear.

63．This passage is intended for       .

A. adults         B. people        C. teachers            D. children

— What’s happened to my library books?

— ____ . 

---- Do you have a minute? I’ve got something to tell you.

---- OK, __________ you make it short.

A．now that          B．if only            C．so long as          D．so that