[单项选择]

Passage 1
One of the greatest mysteries in the study of Cetacea [aquatic mammals] has always been that the creatures found in the stomachs of toothed whales show no teeth marks. Now a University of California at Santa Cruz professor thinks he may have solved the enigma with what he calls the "big bang" theory of cetacean predation.
Ken Norris, natural history professor, believes that rather than use their teeth to attack their victims, toothed whales stun their prey with intense bursts of sound. He points out that all 68 species of odontocetes (a sub-order that includes dolphins) use sound to locate their victims, and suggests this ability may have evolved to the point where it could be used as a weapon.
Millions of years ago, the ancestors of whales had a narrow tapered jaw, streamlined for speed and bristling with long rows of sharp teeth. Today odontocetes are not adapted to surprising their prey or trapping it quickly. Most are
A. Sixty-eight species of odontocetes use sound to locate their victims
B. Toothed whales use sound as weapons
C. Whales and humans have vestigial structures
D. Whale teeth, once sharp, have become somewhat short and uneven

Passage 1
One of the greatest mysteries in the study of Cetacea [aquatic mammals] has always been that the creatures found in the stomachs of toothed whales show no teeth marks. Now a University of California at Santa Cruz professor thinks he may have solved the enigma with what he calls the "big bang" theory of cetacean predation.
Ken Norris, natural history professor, believes that rather than use their teeth to attack their victims, toothed whales stun their prey with intense bursts of sound. He points out that all 68 species of odontocetes (a sub-order that includes dolphins) use sound to locate their victims, and suggests this ability may have evolved to the point where it could be used as a weapon.
Millions of years ago, the ancestors of whales had a narrow tapered jaw, streamlined for speed and bristling with long rows of sharp teeth. Today odontocetes are not adapted to surprising their prey or trapping it quickly. Most are
A. argue for a ban on the capture of whales and dolphins
B. describe the evolution of whales
C. report a possible explanation for the lack of teeth marks on whales' victims
D. reveal the flaws in the "big bang" theory of cetacean predation

Passage One
One day a lawyer’s (律师) wife fell iii and he went to get a doctor. The doctor went to see tile woman, but before he went into the house he stopped. He knew that the lawyer never paid his bill (账单). So he said to the man, "But if I do cure (治愈) your wife I’m afraid you may not pay me."
"Sir," said the lawyer, ’" here I have $ 500. Whether you cure my wife or whether you kill her I will give you all this."
The doctor was now sure of the payment and went into the house. When he reached the woman’s bedside, it was soon clear to him that he could do little. She was badly iii, and though he gave her some medicine to take, she soon died.
He told the lawyer he was very sorry, then asked for the money.
"Did you kill my wife.’" asked the lawyer.
"Of course not," said the doctor.
"Well, did you cure my wife" asked the lawyer.A. The Lawyer and His Wife.
B. She Got Badly Ilk
C. A Good Doctor and a Poor Lawyer.
D. The Lawyer's Trick (诡计).

Passage One
In the U S, people like waiting for a table than sitting with people they don’t know. This means a hostess may not seat a small group even if a large one is available. If you are sitting at a table with people you don’t know, it is impolite to light up a cigarette without asking first if it will disturb them.
At American restaurants and coffee shops, you are usually served tap water before you order. You may find the bread and butter is free and if you order coffee, you may get a free refill (免费再加).
Most cities and towns have no rules about opening and business times for stores or restaurants, though they usually do make rules for bars. In large cities, especially, stores may be open 24 hours a day.
Servings (上的饭菜量) in restaurants are often large, too large for many people. If you can’t finish your meal but would like to enjoy the food later, ask your waitress or waiter for a "doggie bag" (“狗食袋&r
A. They take the food home with a doggie bag for their dogs.
B. They leave the food on the table and go away.
C. They take the food home with a doggie bag and enjoy the food later.
D. They ask the waitress or waiter to keep the food for them.