The rice was________(误以为) for the wheat just now.
There was not much________ (对话) in this drama play.
The car runs too fast; its speed need to be________ (控制).
It was my birthday last Thursday. I decided to celebrate by inviting a few friends out to supper.I chose a restaurant in a quiet part of town. It is one of my favourite restaurants because the food is good and the waiters are friendly. 1.so it is not usually necessary to book a table. In any case, Thursday is not a busy evening as before.
2.. I looked around but no table was free. One of the waiters recognized me. He came across and explained the situation. “A party of tourists came in about half an hour ago，”he said. “It was like an invasion(侵略) .Suddenly the place was full! We can hardly manage(对付，应付) .”
The waiter then pointed to a table in the corner. “The people there are about to leave.” he said. “Just hold on and you'll find a place there.” He was right. Fifteen minutes later, the people at the corner table paid their bill, got up and left. I led my friends across and we all sat down.
3.. We tried to call the attention of the waiter who sent us there， but he， like all the other waiters， was busy with the party of tourists. They ordered lots of food. At last， an hour later， the tourists were finishing their meal and looking very satisfied with life. The waiter， now very tired， appeared at our table. 4.
A few moments later he returned to our table. We could tell from his face that he had bad news for us. 5. “All we can offer you, ”he said，“is an omelet(煎蛋卷) !”
A.Unluckily, our table was almost out of sight.
B.I advised my friends about the best dishes and finally the waiter went off with our order.
C.The waiter was in a hurry.
D.It is hardly ever crowded, because not many people know about it
E.When we entered the restaurant， we were surprised to find it completely full.
F.Looking a little sorry he told us that there was no meat or fish.
G.All the waiters went out happily after having meals.
Monkeys seem to have a way with numbers.
A team of researchers trained three Rhesus monkeys to associate 26 clearly different symbols made up of numbers and selective letters with 0-25 drops of water or juice as a reward. The researchers then tested how the monkeys combined—or added—the symbols to get the reward.
Here's how Harvard Medical School scientist Margaret Livingstone, who led the team, described the experiment: In their cages the monkeys were provided with touch screens. On one part of the screen, a symbol would appear, and on the other side two symbols inside a circle were shown. For example, the number 7 would flash on one side of the screen and the other end would have 9 and 8. If the monkeys touched the left side of the screen they would be rewarded with seven drops of water or juice; if they went for the circle, they would be rewarded with the sum of the numbers—17 in this example.
After running hundreds of tests, the researchers noted that the monkeys would go for the higher values more than half the time, showing that they were performing a calculation(计算), not just remembering the value of each combination.
When the team studied the results of the experiment more closely, they noticed that the monkeys tended to underestimate(低估)a sum compared with a single symbol when the two were close in value—sometimes choosing, for example, a 13 over the sum of 8 and 6. The underestimation was systematic: When adding two numbers, the monkeys always paid attention to the larger of the two, and then added only a fraction(小部分)of the smaller number to it.
"This shows that there is a certain way number is represented in their brains, "Dr. Livingstone says. “But in this experiment what they're doing is paying more attention to the big number than the little one.”
1.What did the researchers do to the monkeys before testing them?
A.They fed them. B.They named them.
C.They trained them. D.They washed them.
2.How did the monkeys get their reward in the experiment?
A.By drawing a circle. B.By touching a screen.
C.By watching videos. D.By mixing two drinks.
3.What did Livingstone's team find about the monkeys?
A.They could perform basic addition. B.They could understand simple words.
C.They could remember numbers easily. D.They could hold their attention for long.
4.In which part of a newspaper may this text appear?
A.Science. B.Health. C.Education. D.Entertainment.
In some science fiction movies, evil robots refuse to die, no matter how hard people fight back.
Now science fiction has become science fact. For the first time, scientists have made a robot that can take a beating (挨打) and keep on going. Scientists from Cornell University made the robot, which looks like a spider with four legs.
Until now, even the most advanced (先进的) robot was almost certain to break down when it was damaged. That is because its computer inside simply doesn’t know how to make the machine work after its shape has changed.
To deal with this problem, the scientists put eight motors (发动机) and two sensors (传感器) that read how the machine is working. They all give signals to the machine’s software. Using this information, the computer can then figure out the machine’s shape at any moment.
The new technology is a big advance in robot-making, scientists say, and it’s far from scary. It may someday help scientists create better artificial (假的) arms and legs and give new freedom to people who losethem. It might also help scientists understand how people and animals figure out their own sense of place in space.
“It has been difficult to design robots that can work well when the environment changes or when it’s damaged,” says Olaf Sporns of Indiana University in US. “With this work, we are nearer to solving this problem.”
1.Why do robots easily break down when they are damaged?
A.They cannot repair themselves.
B.The computer has changed a lot.
C.They have no computers inside.
D.The computer cannot work if the robot changes.
E.
2.The new technology allows the robot to _________.
A.do house work for humans
B.keep working after being damaged
C.remember a lot of information
D.tell people where it is
3.The underlined word “them” in Paragraph 5 refers to ________.
A.sensors
B.robots
C.arms and legs
D.scientists
4.How do the sensors in the robot work?
A.They can replace the computer when it’s broken.
B.They can find out where the damage comes from.
C.They help the computer learn the robot’s condition.
D.They can send signals to the person who uses the robot.
