Be careful what you say around your dog. It might understand more than you think. A border collie named Rico recognizes the names of about 200 objects, say researchers in Germany. The dog also appears 题目和参考答案——青夏教育精英家教网—

题目内容

Be careful what you say around your dog. It might understand more than you think.

A border collie named Rico recognizes the names of about 200 objects, say researchers in Germany. The dog also appears to be able to learn new words as easily as a 3-year-old child. Its word-learning skills are as good as those of a parrot or chimpanzee(黑猩猩).

In one experiment, the researchers took all 200 items that Rico is supposed to know and divided them into 20 groups of 10 objects. Then the owner told the dog to go and fetch one of the items and bring it back. In four tests, Rico got 37 out of 40 commands right. As the dog couldn't see anyone to get clues, the scientists believe Rico must understand the meanings of certain words.

In another experiment, the scientists took one toy that Rico had never seen before and put it in a room with seven toys whose names the dog already knew. The owner then told Rico to fetch the object, using a word the dog had never heard before.

The correct object was chosen in seven out of l0 tests, suggesting that the dog had worked

out the answer by process of elimination(排除法). A month later, Rico remembered half of the new names, which is even more impressive.

Rico is thought to be smarter than the average dog. For one thing, Rico is a border collie, a breed (品种)known for its mental abilities. In addition, the 9-year-old dog has been trained to fetch toys by their names since the age of nine months.

It's hard to know if all dogs understand at least some of the words we say. Even if they do, they can't talk back. Still, it wouldn't hurt to sweet-talk your dog every now and then. You might just get a big, wet kiss in return!

From paragraph 2 we know that __ .

A. animals are as clever as human beings

B. dogs are smarter than parrots and chimpanzees

C. chimpanzees have very good word-learning skills

D. dogs have similar 'learning abilities as 3-year-old children

Both experiments show that .

A. Rico is smart enough to get all commands right

B. Rico can recognize different things including toys

C. Rico has developed the ability of learning mathematics

D. Rico won't forget the names of objects once recognizing them

Which of the following statements is true?

A. The purpose of the experiments is to show the border collie's mental abilities.

B. Rico has a better memory partly because of its proper early training.

C. The border collie is world-famous for recognizing objects.

D. Rico is born to understand its owner's commands.

Which may be the best title of the passage?

A. Do dogs understand us?

B. Does your dog understand you?

C. Be careful with dogs.

D. Be friendly to your dog.

【小题1】C

【小题1】B

【小题1】A

解析:

略

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I know what you’re thinking: pizza（比萨饼）？ For breakfast? But the truth is that you can have last night’s leftovers in the a.m. if you want to.

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So eat something in the morning, anything. I know plenty of friends who end up having no breakfast altogether, and have just coffee or orange juice. I say, try heating up last night’s leftovers – it may sound crazy, but if it works for you, do it! I find if I tell myself, “You can always eat it tomorrow.” I put away the leftovers instead of eating more that night. Try it … you may save yourself some pre-bedtime calories. And watch your body gain the fat-burning effects.

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The following experiment is an easy one that you can do at home. But make sure that you are supervised, because you will need to use matches. Now foe the experiment！

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·A hard-boiled egg without the shell

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·A piece of paper

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Metheod

1） Check that the paper will sit firmly on the neck of the bottle.

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Result

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Why it happened

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Last week, President Barack Obama gave a back- to-school speech to students at the Julia R. Masterman Laboratory and Demonstration School in Philadelphia, Pennsylvania. Students in schools across the country also tuned in to watch the President's speech on TV. He stressed the importance of trying new things, working hard and believing in yourself.

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B．There is not enough space for the warning.

C．They don’t want the users to pay attention to it.

D．The warning is not important at all.

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