A、True
B、False
第1题
It is not unusual for a pet to be sent by air cargo from Columbia to New York, but last December's shipment of a 4-year-old sheep dog caught a New York Kennedy Airport Customs inspector's eye. The dog looked to be on its last legs, and there was an unusual lump on the side of its body. An X-ray and emergency surgery revealed the presence of 10 condoms tightly packed with five pounds of cocaine that had been surgically implanted in the dog's abdomen - yet another first for Customs in the war on drugs.
When it comes to transporting drags, the methods used are only as limited as a smuggler's imagination. Kilo bricks of cocaine are routinely concealed beneath false bottoms of containers that hold poisonous snakes. "You've got snakes that are 12 feet long," says a United States Fish and Wildlife Service agent - and sometimes the drag is in the snake. "Who's going to pull it out and feel it?"
In 1994, United States Customs seized 204,391 pounds of cocaine, 559,286 pounds of marijuana and 2,577 pounds of heroin. Just how much actually flows into the country is anyone's guess. Some Customs officials estimate that only 10 percent of the drugs coming into the country are ever seized. In Miami, the District Attorney won't even prosecute small fry. "It's got to be over five kilos of cocaine, above a kilo of heroin and more than 5,000 pounds of marijuana or it's not something that we're going to stop the presses on," says Tom Cash, a retired agent.
Given this deluge, one can only wonder if agents are ever confounded by some of the smuggling methods. "There are things we haven't seen before," says John McGhee, a Miami Customs special agent, "but nothing really surprises us."
The dog was different from others in that
A.it could stand only on its hind legs.
B.it had only two legs.
C.it was very attractive.
D.it had a very big abdomen.
第2题
第3题
Students should be jealous. Not only do babies get to doze their days away, but they've also mastered the fine art of learning in their sleep.
By the time babies are a year old. They can recognize a lot of sounds and even simple words. Marie Cheour at the University of Turku in Finland suspected that they might progress this fast because they learn language while they sleep as well as when they are awake.
To test the theory, Cheour and their colleagues studied 45 newborn babies in the first days of their lives. They exposed all the infants to an hour of Finnish vowel sounds one that sounds like "oo", another like "ee" and a third boundary vowel peculiar to Finnish and similar languages that sounds like something in between. EEG (脑电图) recording of the infants brains before and after the session showed that the newborns could not distinguish the sounds.
Fifteen of the babies then went back with their mothers, while the rest were split into two sleep-study groups. One group was exposed throughout their night-time sleeping hours to the same three vowels, while the others listened to the other, easier-to-distinguish vowel sounds.
When tested in the morning, and again in the evening, the babies who'd heard the tricky boundary vowels all night showed brainwave activity indicating that they could now recognize this sound. They could identify the sound even when its pitch was changed, while none of the other babies could pick up the boundary vowel at all.
Cheour doesn't know how babies accomplish this nighttime learning, but she suspects that the special ability might indicate that unlike adults, babies don't "turn off" their cerebral cortex(大脑皮层)while they sleep. The skill probably fades in the course of the first years of life, she adds. So forget the idea that you can pick up the tricky French vowels as an adult just by slipping a language tape under your pillow. But while it may not help grown-ups, Cheour is hoping to use the sleeping hours to give remedial help to babies who are genetically at risk of language disorders.
Babies can learn even in their sleep.
A. Right
B. Wrong
C. Not mentioned
第4题
A. it could stand only on its hind legs.
B. it had only two legs
C. it was very attractive
D. it had a very big abdomen
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