Blue whales are the largest animals ever known to have existed on the planet，and they can grow to a length of 100 feet and weigh more than 330，000 pounds．But recently researchers have found that these whales are on the move and they have migrated （moved） from California waters to areas off Canada and Alaska for the first time since commercial whaling ended in 1965．
The researchers identified 15 blue whales that have appeared off the coast of British Columbia and the Gulf of Alaska since 1997．Four of these whales were recognized as ones that were once sighted off California shores，suggesting that the whales are returning to an old migration pattern between the coasts．
Before commercial whaling began in the early 1900s，blue whales were found widely throughout the North Pacific and California waters．But from the 1920s to the 1960s，whaling severely reduced the whale populations．Blue whales never recovered in the Northern Pacific，making sightings in this area rare．However，much larger groups of whales have been observed close to California since the 1970s．
The scientists had previously thought that the California population was separate from the population that had historically lived in North Pacific waters．But the current study shows that whales off the coast of British Columbia and the Gulf of Alaska are likely part of the California population．
To identify the blue whales，the researchers looked at photos of cetaceans taken in the North Pacific Ocean and compared them with a library of blue whale pictures taken along the West Coast of the United States and Southern Pacific．Up to now，the researchers are not quite sure why the whales are changing their migration patterns，but they suspect that the whales may be following their food moving farther north by the changes in ocean conditions．
（1）According to the passage，blue whales are DD．
A．following the fixed route of migration
B．dying out due to commercial whaling
C．rarely found in the Southern Pacific
D．moving from the south to the north
（2）The whale population in the northern Pacific CC．
A．is different from the California population
B．has become the largest group since the 1970s
C．is probably part of the California population
D．has lived there since the 1960s
（3）The underlined word "cetaceans" in Paragraph 5 probably means AA．
A．whales species
B．land creatures
C．ocean conditions
D．migration patterns
（4）What might make blue whales migrate according to the researchers？ BB
A．Commercial whaling．
B．Food resources．
C．Weather conditions．
D．Life reproduction．
【考點】社會．
【答案】D；C；A；B
【解答】
【點評】
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發(fā)布：2024/4/20 14:35:0組卷：0引用：1難度：0.5
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1．Hi Judy!
You often complain to me that you always buy goods unreasonably on sale promotion（促銷）and feel it shameful after going back to your school dormitory with new things not needed，considering all the money you spend is your parents' income．
In fact，this is a common phenomenon，called impulsive buying，a buying unplanned and hard to control．It usually happens when a store offers discounts（打折）or sales promotion-a special way used by stores to get more customers，which means you may fall into its traps even without notice．
Stores，with a good knowledge of customers' psychology（心理），make use of it to drive business．Avoiding all the impulsive buying is a hard thing．However，knowing our psychology behind it and reducing the times when influenced by sales promotion may be useful．So you should keep calm when facing the sales promotion by keeping in mind what you really need．
Find out the conditions where you are likely to buy things blindly．When seeing a dress advertised at 20% off，do not concentrate on the discount，but warn yourself against falling into the trap of "saving money''．
Besides，do not forget the long-term effects of your choice when meeting a sales promotion．Short-term benefits，like excited feeling just after buying items encourage impulsive buying．But the long-term costs such as waste of money and the sense of shame really annoy you．When seeing the advertisements，remember what you really want to buy originally and warn yourself of that terrible feeling．Only in this way can you save money for really needed things．
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（1）Judy felt it a shame to．
A．complain to others about the poverty of her family
B．waste her parents' money on unneeded things
C．buy cheap things at lower prices or with less money
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（2）Which of the following is true of impulsive buying according to Rachel？
A．It is designed by shops to draw customers' attention．
B．It can be brought under control with the help of stores．
C．It is planned by buyers with the purpose of saving money．
D．It is done by customers without considering its bad effects．
（3）In face of sales promotion Judy is advised to．
A．have belief in her own immediate decision
B．check the quality of the goods at low prices
C．stay calm by thinking about what she really needs
D．take the chance to learn more about stores tricks
（4）How do buyers usually feel in the long run after buying discounted things？
A．Regretful．
B．Thrilled．
C．Relaxed．
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B．It is located in London.
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A．Burlington School.
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D．It offers General and Specialist English courses.發(fā)布：2025/1/6 16:30:6組卷：0引用：1難度：0.6 -
3．Ever since I graduated from high school I've worked in the factories surrounding my hometown every summer.However，making the transformation between school and full-time blue-collar work during the break never gets any easier.For a student like me who considers any class before noon to be unacceptable，getting to a factory by 6 o'clock each morning is suffering.My friends never seem to understand why I'm so relieved to be back at school or that my summer vacation has been anything but a vacation.
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D．He came to appreciate his college education.發(fā)布：2025/1/6 16:30:6組卷：0引用：1難度：0.5
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