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Most people are afraid of bees. Anyone who’s been stung by one quickly learns to avoid bees whenever possible. I learned that lesson when, as a child, I ran into a beehive. Dozens of bees attacked, stinging me all over my body. It was a painful incident, but I was lucky. Those bees weren’t Africanized, or “killer” bees.
Killer bees are extremely aggressive（攻击的）. When they become upset, they attack. And just about anything like noises, shiny objects, dark clothes can all cause killer bees to attack. When one killer bee stings a victim, it gives off a chemical. Other bees smell this and go into attack mode. The whole hive will aggressively attack the unfortunate victim. Killer bees will also run their victims for up to a quarter of a mile. Some victims have tried to keep away from the bees by jumping into water. But killer bees will wait for them to come up and then continue their attack.
Killer bees can be found in South America and the southern
The new Africanized bees actually decreased honey production and were very aggressive. Scientists tried to separate the bees, but some of them escaped and began rapidly spreading north. Since then, killer bees have been causing damage to humans, animals and the American honey industry. Over the years, these aggressive killer bees have caused nearly 10,000 people to die.
What’s the best thing to do if you are attacked by killer bees? Fortunately, killer bees don’t fly very fast. Most healthy adults can outrun them. Experts advise you to cover your face and run!
54．Which of the following statements is true according to the passage?
A．It’s a better way to jump into water to escape the attack of killer bees.
B．The Africanized bees did actually increase honey production though aggressive.
C．Killer bees didn’t attack humans, but animals.
D．It is usually not easy for a killer bee to catch up with a healthy adult.
55．The writer refers to his experience of being stung by bees at the first paragraph in order to ___________.
A．prove that bees are dangerous
B．present that killer bees are more dangerous
C．support the idea that people are afraid of bees
D．tell us he had a narrow escape from the attack of bees
56．The underlined word “disastrous” in the third paragraph probably means _________.
A．full of hope B．of no use
C．causing much damage D．exciting
57．We can infer from the passage that ___________.
A．killer bees will take the place of European bees before long
B．killer bees are sure to increase the production of coffee
C．it is difficult to get rid of killer bees
D．killer bees have caused great harm to the people there
查看习题详情和答案>>The killer bees are coming! By the time you read this they will have reached Texas. By the mid-1990s, they will have reached all the warmer areas of the United States. Scientists as well as farmers wait for them with a mixture of fear and wonder.
The killer bees should not be coming at all! Nature did not put them on this direct path for the United States; human beings did. The killer bees are from Africa. But in 1957 a scientist from Brazil got some of these killer bees for his experiments. The aim was to produce a better bee. However, an accident happened: a guest beekeeper let twenty-six of the queen bees escape by mistake. Before long, groups of killer bees took off for the woods.
Since that time, the wild killer bees have multiplied (繁衍) many times over. By 1988, their population was over . They have spread all over South America, central America, and most of Mexico. The United States is the next stop.
Are the killer bees really killers? Yes, they are. In their first thirty years in America, they have killed thousands of hens, pigs, and other animals. While no one knows the exact number, it is believed that several hundred people have also been killed.
So be careful. Killer bees are on the way. Scientists have no idea what to do with them yet. There must be a way.
1．We know from the passage that killer bees will spread to the United States ___________.
[ ]
2．The killer bees were brought to Brazil in order to ___________.
[ ]
3．The passage suggests that to all the creatures on the earth ___________.
[ ]
A． experiments are often very frightening
B． beekeepers are the most dangerous people
C． the greatest danger often comes from man himself
D． warmer areas are full of fear and wonder
查看习题详情和答案>>Killer bees started in Brazil in 1957. A scientist in Sao Paulo wanted bees to make more honey. So he put forty-six African bees with some Brazilian bees. The bees bred and made a new kind of bee. But the new bees were a mistake. They did not want to make more honey. They wanted to attack. Then, by accident, twenty-six African bees escaped and bred with the Brazilian bees outside.
Scientists could not control the problem. The bees spread. They went from Brazil to Venezuela. Then they went to Central America. Now they are in North America. They travel about 390 miles a year. Each group of bees, or colony (群体), grows four times a year. This means one million new colonies every five years.
Why are people afraid of killer bees? People are afraid for two reasons. First, the bees sting (刺痛、蜇) many more times than a normal bee. Killer bees can sting sixty times a minute non-stop for two hours. Second, killer bees attack in groups. Four hundred bee stings can kill a person.
Already several hundred people are dead. Now killer bees are in Texas. In a few years they will spread all over the United States. People can do nothing but wait
- 1.
A scientist in Brazil wanted bees ________
- A.to go to Central America
- B.to grow four times a year
- C.to make more honey
- D.to breed with Brazilian bees outside
- A.
- 2.
The bees bred and made a new kind of bee. Here “bred” means ________
- A.attack
- B.run away
- C.died
- D.produce young
- A.
- 3.
Killer bees can sting ________
- A.once two hours
- B.400 times two hours
- C.3600 times two hours
- D.7200 times two hours
- A.
- 4.
Why are people afraid of killer bees?
- A.Because they sting Brazilian bees
- B.Because they sting more and attack in groups
- C.Because they won’t make any honey
- D.Because each group of bees grows four times a year
- A.
- 5.
What will the people do with the killer bees?
- A.People can do nothing but wait
- B.People will make another kind of bees
- C.Scientists could control the problem
- D.They will spread all over the world
- A.
The killer bees are coming! By the time you read this they will have reached Texas. By the mid-1990s, they will have reached all the warmer areas of the United States. Scientists as well as farmers wait for them with a mixture of fear and wonder.
The killer bees should not be coming at all! Nature did not put them on this direct path for the United States; human beings did. The killer bees are from Africa. But in 1957 a scientist from Brazil got some of these killer bees for his experiments. The aim was to produce a better bee. However, an accident happened: a guest beekeeper let twenty-six of the queen bees escape by mistake. Before long, groups of killer bees took off for the woods.
Since that time, the wild killer bees have multiplied (繁衍) many times over. By 1988, their population was over . They have spread all over South America, central America, and most of Mexico. The United States is the next stop.
Are the killer bees really killers? Yes, they are. In their first thirty years in America, they have killed thousands of hens, pigs, and other animals. While no one knows the exact number, it is believed that several hundred people have also been killed.
So be careful. Killer bees are on the way. Scientists have no idea what to do with them yet. There must be a way.
1．We know from the passage that killer bees will spread to the United States ___________.
[ ]
2．The killer bees were brought to Brazil in order to ___________.
[ ]
3．The passage suggests that to all the creatures on the earth ___________.
[ ]
A． experiments are often very frightening
B． beekeepers are the most dangerous people
C． the greatest danger often comes from man himself
D． warmer areas are full of fear and wonder
查看习题详情和答案>>Most people are afraid of bees. Anyone who’s been stung by one quickly learns to avoid bees whenever possible. I learned that lesson when, as a child, I ran into a beehive. Dozens of bees attacked, stinging me all over my body. It was a painful incident, but I was lucky. Those bees weren’t Africanized, or “killer” bees.
Killer bees are extremely aggressive（攻击的）. When they become upset, they attack. And just about anything like noises, shiny objects, dark clothes can all cause killer bees to attack. When one killer bee stings a victim, it gives off a chemical. Other bees smell this and go into attack mode. The whole hive will aggressively attack the unfortunate victim. Killer bees will also run their victims for up to a quarter of a mile. Some victims have tried to keep away from the bees by jumping into water. But killer bees will wait for them to come up and then continue their attack.
Killer bees can be found in South America and the southern United States. They were created when, in 1956, scientists brought African bees to Brazil. African bees were known to increase coffee production. Some scientists thought that these bees might increase honey production, too. So in Brazil, they tried crossbreeding the African bees with European honeybees. The results were disastrous.
The new Africanized bees actually decreased honey production and were very aggressive. Scientists tried to separate the bees, but some of them escaped and began rapidly spreading north. Since then, killer bees have been causing damage to humans, animals and the American honey industry. Over the years, these aggressive killer bees have caused nearly 10,000 people to die.
What’s the best thing to do if you are attacked by killer bees? Fortunately, killer bees don’t fly very fast. Most healthy adults can outrun them. Experts advise you to cover your face and run!
1．Which of the following statements is true according to the passage?
A．It’s a better way to jump into water to escape the attack of killer bees.
B．The Africanized bees did actually increase honey production though aggressive.
C．Killer bees didn’t attack humans, but animals.
D．It is usually not easy for a killer bee to catch up with a healthy adult.
2．The writer refers to his experience of being stung by bees at the first paragraph in order to ___________.
A．prove that bees are dangerous
B．present that killer bees are more dangerous
C．support the idea that people are afraid of bees
D．tell us he had a narrow escape from the attack of bees
3．The underlined word “disastrous” in the third paragraph probably means _________.
A．full of hope B．of no use
C．causing much damage D．exciting
4．We can infer from the passage that ___________.
A．killer bees will take the place of European bees before long
B．killer bees are sure to increase the production of coffee
C．it is difficult to get rid of killer bees
D．killer bees have caused great harm to the people there
查看习题详情和答案>>