题目
题型：不详难度：来源：
If you are looking for an animal to take the title of “most violent fish in the sea”, then the tiger puffer (河豚) fish would have to be a strong contestant. Not only is it deadly poisonous --- though that doesn’t stop people trying to eat it --- but it is also able to scare off enemies by inflating itself to become much larger than normal, when it is young it even chews on its own brothers and sisters.
Tiger puffer fish attach their eggs to rocks near the bottom of the sea, often at the mouths of bays. Then the larvae (幼鱼) move to the entries of rivers and lakes once they have grown a little. Then, having put on a lot of weight, they head out to sea. There’s no innocent childhood for the puffer fish, as Shin Oikawa of Kyushu University in Japan and his colleagues found out when they put the larvae of tiger puffer fish in the lab and monitored them for two months. They found that the larvae went through three steps in which their metabolic(新陈代谢) rates increased dramatically when they reached body weights of 0.002g, 0.01g, and 0.1g. When a larva went through one of these steps, its behavior also changed. For instance, once a larva had passed the first level it would have grown its first tooth and could start attacking larvae that had not yet reached that stage. Similarly, any larva that had reached the 0.01g or 0.1g levels would start attacking lighter larvae.
The researchers noted that the baby fish had a “relatively small mouth”, so rather than swallowing their brothers and sisters whole, they would bite pieces out of them. Despite this limitation, the fish caused plenty of deaths --- up to 12 per cent of the deaths that happened in the lab each day.
Those fish that grew fast enough to be able to chew on their fellows had an advantage. The extra food accelerated their growth and development. Tiger puffer fish are likely to be faster and swifter, so they can deal better with enemies.
As the name suggests, puffer fish can inflate to make themselves seem much larger than they really are, thus scaring off enemies. They do this by filling their stomachs, which are extremely elastic(弹性的), with water. If that’s not enough of a threat, the tiger puffer fish --- like most of the other puffer fish in the family --- carries a deadly toxin(毒素). Eat one puffer fish and the poison will paralyze (瘫痪) your muscles, including the muscles responsible for breathing, so death is usually caused by a lack of oxygen. Famously, the fish is a delicacy in Japan, where highly qualified chefs produce dishes that contain the safe level of the poison. Interestingly, the puffer fish does not go to the trouble of producing the poison itself. Instead, it hosts bacteria (细菌) that produce the stuff. It obtains these bacteria from its diet, so the youngest adult fish are not poisonous.
小题1:All of the following statements account for the violence of puffer fish except that_____.
| A．they are very difficult to catch |
| B．they can become larger to threaten enemies away |
| C．they kill their younger companions as they grow up |
| D．they are deadly poisonous |
| A．can only grow to a weight of 0.1g |
| B．do not change their behavior as they grow up |
| C．like to find a safe place to hatch the next generation |
| D．begin to grow teeth when they reach the third level |
| A．Its inner organs. | B．The air it breathes in. |
| C．The diet it eats. | D．The bacteria around it. |
| A．Puffer fish can only produce poison when they face danger. |
| B．People like eating puffer fish even though they are poisonous. |
| C．The larvae are more aggressive than adult puffer fish. |
| D．Young puffer fish taste better than adult puffer fish. |
答案
小题1:A
小题2:C
小题3:C
小题4:B
解析
小题1:细节题。最后一段第一行puffer fish can inflate to make themselves seem much larger than they really are说明B正确。第二段倒数2,3行it would have grown its first tooth and could start attacking larvae that had not yet reached that stage.说明C正确。最后一段第四行carries a deadly toxin(毒素)说明D正确。A没有提及。
小题2:推理题根据第二段第一行Tiger puffer fish attach their eggs to rocks near the bottom of the sea, often at the mouths of bays.可知他们把卵产在入海口，然后小鱼进入淡水，长大一点以后再进大海。说明他们是想找一个安全的地方孵化下一代。
小题3:细节题。根据文章最后一句It obtains these bacteria from its diet, so the youngest adult fish are not poisonous.
小题4:细节题。根据文章最后一段倒数第四行Famously, the fish is a delicacy in Japan, where highly qualified chefs produce dishes that contain the safe level of the poison.
核心考点
试题【If you are looking for an animal to take the title of “most violent fish in the 】；主要考察你对题材分类等知识点的理解。[详细]
举一反三
For those who are tired doing the laundry, Samsung has found an answer: a washing machine that can tell you when your laundry is done via a smartphone app(application).
Strange though it may seem — “my wife already does that” was a common response among attendees viewing the device when it was introduced at the Consumer Electronics Show (CES) this week — Samsung is just one of many appliance makers racing to install (安装) a large number of internet-connected features in machines in an effort to make them “smart”.
Last year, it was a refrigerator that tweeted. This year, it’s Wi-Fi-enabled laundry machines and fridges that can tell you when your groceries are going bad.
The washers and dryers, available starting in the spring, connect to any smartphone through a downloadable application. The phone can then be used as a remote control, so the machines can be turned on and off while their owners is at work or on the bus.
Samsung says it’s not just something new — the app connection actually has some practical uses.
“If you started to dry clothes in the morning and forgot to take them out, you can go to your phone and restart your dryer for the time when come home, so your clothes are refreshed and ready to go,” said spokesperson Amy Schmidt.
The company also says that with electricity rate(电价)varying depending on the time of day, more control over when the machines are used can help save money.
Perhaps, but what they will probably really accomplish is what all good technologies do —enable laziness. Rather than getting up to check on whether the laundry is done, users will instead monitor it on their phones while watching TV.
小题1:What can be inferred from the common response of the attendees at the CES?
| A．The machine will be a big success. |
| B．their wives like doing the laundry. |
| C．The machine is unrelated to their life. |
| D．This kind of technology is familiar to them. |
| A．They can tell you when your clothes need washing |
| B．They can be controlled with a smartphone |
| C．They are difficult to operate |
| D．They are sold at a low price |
| A．the app connection makes life easier |
| B．it is better to dry clothes in the morning |
| C．smartphone can shorten the drying time |
| D．we should refresh clothes back at home |
| A．The laundry should be frequently checked |
| B．Lazy people like using such machines |
| C．Good technologies also cause problems |
| D．Television may help do the laundry. |
Honey(蜂蜜)from the African forest is not only a kind of natural sugar, it is also delicious. Most people, and many animals, like eating it. However, the only way for them to get that honey is to find a wild bees" nest(巢)and take the honey from it. Often, these nests are high up in trees, and it is difficult to find them. In parts of Africa, though, people and animals looking for honey have a strange and unexpected helper一a little bird called a honey guide.
The honey guide does not actually like honey, but it does like the wax (蜂蜡) in the beehives (蜂房). The little bird cannot reach this wax, which is deep inside the bees’ nest. So, when it finds a suitable nest, it looks for someone to help it. The honey guide gives a loud cry that attracts the attention of both passing animals and people. Once it has their attention, it flies through the forest, waiting from time to time for the curious animal or people as it leads them to the nest. When they
finally arrive at the nest, the follower reaches in to get at the delicious honey as the bird patiently waits and watches. Some of the honey, and the wax, always falls to the ground, and this is when the honey guide takes its share.
Scientists do not know why the honey guide likes eating the wax, but it is very determined in its efforts to get it. The birds seem to be able to smell wax from a long distance away. They will quickly arrive whenever a beekeeper is taking honey from his beehives, and will even enter churches when beeswax candles are being lit.
小题1:Why is it difficult to find a wild bees" nest?
| A．It"s small in size. |
| B．It"s hidden in trees. |
| C．It"s covered with wax. |
| D．It"s hard to recognize. |
| A．A bee. | B．A bird. |
| C．A honey seeker. | D．A beekeeper. |
| A．it gets its food |
| B．it goes to church |
| C．it sings in the forest |
| D．it reaches into bees" nests |
| A．Wild Bees |
| B．Beekeeping in Africa |
| C．Wax and Honey |
| D．Honey-Lover"s Helper |
Mark and his brother Jason both were looking at the shining new computer enviously. Jason was determined not to go against their father’s wishes but Mark was more adventurous than his brother. He loved experimenting and his aim was to become a scientist like his father.
“Dad will be really mad if he finds out you’ve been playing with his new computer.” Jason said, “He told us not to touch it.”
“He won’t find out.” Mark said, “I’ll just have a quick look and shut it down.”
Mark had been scolded before for touching his father’s equipment. But his curiosity was difficult to control and this new computer really puzzled him.
It was a strange-looking machine –one his dad had brought home from the laboratory where he worked. “It’s an experimental model,” his father had explained, “so don’t touch it under any circumstances.” But his father"s warning only served to make Mark more curious. Without any further thought, Mark turned on the power switch. The computer burst into life and seconds later, the screen turned into colors, shifting and changing and then two big white words appeared in the center of the screen: “SPACE TRANSPORTER.”
“Yes!” Mark cried excitedly, “It’s a computer game. I knew it! Dad’s only been pretending to work. He’s really been playing games instead.” A new message appeared on the screen:
“ENTER NAMES
VOYAGER 1: …
VOYAGER 2: …”
Mark’s fingers flew across the keyboard as he typed in both of their names.
“INPUT ACCEPTED. START TRANSPORT PROGRAM. AUTO-RETRIEVE INITIATED（自动回收程序已启动）.”
The screen turned even brighter and a noise suddenly rose in volume.
“I think we’d better shut it off, Mark,” Jason yelled, reaching for the power switch. He was really frightened.
But his hand never reached the switch. A single beam of dazzling white light burst out of the computer screen, wrapping the boys in its glow (光芒), until they themselves seemed to be glowing. Then it died down just as suddenly as it had burst into life. And the boys were no longer there. On the screen, the letters changed.
“TRANSPORT SUCCESSFUL. DESTINATION（目的地）: MARS. RETRIEVE DATE: 2025.”
小题1:Why did Mark touch the computer against his father’s warning?
| A．He wanted to take a voyage. |
| B．He wanted to practice his skill |
| C．He was so much attracted by it. |
| D．He was eager to do an experiment. |
| A．In an electronic factory. |
| B．In a computer company. |
| C．In a scientific research center. |
| D．In an information processing center. |
| A．a computer game | B．a company website |
| C．a software producer | D．an astronomy program |
| A．He was afraid of being scolded. |
| B．He didn’t like the loud noise and light. |
| C．He didn’t want to play games any more. |
| D．He was afraid something dangerous might happen. |
| A．They were blown into the air. |
| B．They were sent to another planet. |
| C．They were hidden in the strong light. |
| D．They were carried away to another country |
Seven loyal readers came to the Teens’ office two weeks ago. They had a wonderful day learning how to make a newspaper. But what 36 made them excited was that they had their say（发表意见）.
“What most impressed me was 37 I was saying something, I found all eyes were 38 me,” said Tang Shining, one of the students. Her friend, Li Chunbei agreed, and felt very glad that when she was talking, the editors nodded and even 39 notes.
Students were happy to see the editors listen to their 40 . You may often 41 about being neglected (忽略) by teachers and parents. 42 before complaining, please 43 that you have already spoken about your thoughts.
It’s common in China that teachers at school and parents were 44 the ones to tell teenagers what they should and shouldn’t do. The young are 45 to doing what they are told, rather than thinking by themselves. But then their ideas would be locked in their brains and not be 46 .
A girl wrote to Teens about her family 47 . She used to be very sad because her father seldom talked and played with her. After years of consideration, she 48 decided to write her father a letter, telling him about her sadness. To her 49 , the father 50 , saying that he didn’t realize his mistakes. From then on, he really 51 .
Sometimes, we need to let our 52 be heard, so others can understand our thoughts and feelings. Don’t be afraid of being 53 for what you have done. You know it is your 54 to speak your mind. 55 your ideas are denied (否定), at least you have tried your best. You will not be left with any regret.
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The Internet is not perfect. There are many problems with it.
The Internet is not organized. There is no one in charge of the Internet. It is sometimes difficult to find what you are looking for. It is also easy to get the wrong information on the “Net”.
Some businessmen cheat people on the Internet. Internet thieves can steal credit card numbers. Some advertisers send spam to e-mail boxes. E-mail boxes are often filled with these unwanted advertisements.
Illegal businesses can operate on the Internet. These businesses sell X-rated materials, cigarettes and alcohol to teenagers.
The Internet has websites with information about making bombs, breaking the law and terrorism.
Criminals can fool people, especially children, in chat rooms. They can spread poisonous information and attack new members.
The Internet is the greatest advance in communication since human emerged. But it can also like a dark alley in a dangerous part of town. Parents need to set parental controls on their children when they use the Internet. This will keep some of the bad material away from their children.
The Internet can be dangerous to computers, too. Some people who have evil intentions enjoy causing problems for other people they don’t even know. They create computer viruses. A computer can get virus by downloading a program that has a virus in it. Some virus come by e-mail.
A virus can destroy the data a person has saved in computer files. A virus can cause a computer to crash. A virus can also reproduce itself! It can send copies of itself to everyone on a person’s e-mail address list. Then these people’s will have the same problems and can’t work normally!
小题1:Why can illegal businesses operate on the Internet?
| A．Because some people like to buy banned products on the Internet. |
| B．Because there is no one in charge of the Internet. |
| C．Because X-rated materials, cigarettes, alcohol and so on can be sold well on the Internet. |
| D．Because people who operate businesses on the Internet are criminals. |
| A．poisonous information may have a bad effect on children |
| B．children may damage the computers |
| C．the Internet is always unsafe for the children |
| D．children can’t use the computers well |
| A．to improve the computers |
| B．to find a medicine to kill computer viruses |
| C．to order people not to use the Internet |
| D．to improve people’s moral level（道德水平）. |
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