20、Pat Craig sits down and stares at the tiger. The big cat locks its eyes on Craig and, shoulders bent, moves toward him. Craig flattens his palm against the chain-link fence and leans even closer as the 700-pound tiger approaches. Then, with his top teeth on his lower lip, Craig blows three short puffs（喷气）of air. The tiger brings his face inches from Craig’s and blows three puffs back. In tiger language , they have just said hello.

After the greetings, Craig strokes the cat’s pink nose and soft forehead, and the tiger moans（呻吟）as if his worst itch has been injured. “Hi, Ricky,” Craig said in a loud voice, “You’re a good boy.”

Ricky lives in the Wild Animal Sanctuary in Keenesburg, Colorado, along with 73 other tigers but the sanctuary wasn’t their first stop. Many of these tigers were living in dirty conditions while earning their survival in roadside zoos, portrait studios on county fairs. Others served as breeding machines their young were often shipped away in boxes before growing up; and some were owned by private citizens who abandoned them when they outgrew the cute killen stage.

The tigers aren’t alone at the sanctuary either; African lions, mountain lions, leopards, wolves, and more. Thanks to one man, Pat Craig, who funded and built this 160-acre place of unwanted wild animals, they eat balanced meals and get proper care.

By estimates, more than 25,000 wild animals live in cages outside the zoo system in the United States, many in cruel conditions. Owners who use their animals for commercial reasons may have proper legal permits, but the licenses give the animals only minimal protection, and although there are laws against selling wild animals across state lines, in several states there is no prohibition against owning, say a leopard or an African lion.

1．The first paragraph shows that                 .

A．Pat and the tiger greet each other in a special way

B．Pat is quite afraid of the tiger when they meet

C．Pat and the tiger often puff to each other

D．Pat is playing a trick on the tiger

2．The underlined word Sanctuary in the third paragraph most likely means           .

A．birthplace        B．territory          C．shelter             D．zoo

3．The animals at the sanctuary             .

       A．are offered balanced diets

       B．are shipped away in boxes

       C．are deserted when grown up

       D．are used for commercial reasons

4．It can be learned from the passage that            .

       A．laws of protecting wild animals are very effective

       B．the protecting of wild animals is far from satisfactory

       C．the living conditions of wild animals have been greatly improved

       D．wild animals are becoming more and more friendly to human beings

18、—Have you heard of this new brand of computer, Mike?

—Yes, of course and I’ve decided to buy         .

A．it              B．one           C．this          D．that

17、Our opinions on language learning differ greatly         each other’s in that respect. 

A．at      B．by     C．for    D．from

16、Bicycles have been around in our life for more than hundreds of years, but no one knows who __________the first bicycle. 

A．invented           B．had invented            C．has invented            D．would invent

15、Advertisements are powerful and some companies try to mislead us, so we         be careful when reading them.

A．can          B．may          C．must        D．would

14、Last Sunday, my cousin sent me an e-mail         me to his birthday party.

A．invited             B．inviting            C．to invite           D．having invited

13、High-speed trains travel at 300 kilometers an hour, which is about         normal trains.

A．four times the speed as                                B．the speed four times of

C．four times as the speed of                        D．four times the speed of

12、In a foreign company, if you have a good command of English, you         much more easily.

A．will promote                                               B．promote

C．will get promoted                            D．are promoted

11、China has planned to build the world’s largest national park,         is expected to replace America’s Yellowstone National Park. 

A．which       B．where       C．what     D．as