(Question)
Most humans expect to receive fair treatment. A recent study shows that monkeys may feel the same way. This is the first time scientists have seen this kind of behavior in animals. Scientists chose monkeys for the research because monkeys have close relationship with each other and they also have good teamwork. Sarah Brosnan, the leader of the research, put female monkeys in pairs. The researchers trained the monkeys to exchange a small rock with them. "That may sound simple, but not very many animals are willing to give things away." Says Brosnan. When a monkey exchanged a rock with the researcher within 60 seconds, she received a reward. Usually, the reward was a piece of cucumber. The partner of each monkey who made an exchange also received a reward. Sometimes the partner got the same reward (a piece of cucumber), but other times the partner received a better reward (a grape). The researchers were surprised at how the monkey _ to the unfair treatment. When a monkey saw her partner get better treatment, she was unhappy. The monkeys did not want to continue the test or eat the cucumbers they received. Some monkeys even threw their food at the researchers. Bronson's research suggests that monkeys do not like unfair treatment. However, as Brosnan explains, "We don't know how monkeys learn to dislike being treated unfairly. But that opens up a whole new research field." Scientists will continue their research. The monkeys in the research were trained to _ . A) ask their partners for help B) give away food to the researchers C) get a reward from their partners D) exchange a rock with the researchers
(Answer)
D

(Question)
Comets are parts of our solar system. Like the planets, they go around the sun. But comets are not made of solid rocks like planets. A comet is a ball of dust, stones, and ice. Many people call comets dirty snowballs. The "snowball" may be only a few miles across. But when the sun heats the "snowball," much of it is changed to gases. The gases spread out and form the comet's head, which may be thousands of miles across. A comet moves fast in its trip around the sun. But when we see it, the comet does not seem to move. That's because it is so far away. The moon moves fast, but when you look at it, you can't see any motion . That's because the moon is far away. Each year astronomers discover new comets. Some of them are seen only once. They make one trip around the sun and then go away out into space. The sun's gravity cannot hold them. Other comets, like Halley, keep returning. They have been captured by the sun. Halley's earliest visit was probably 3,000 years ago. It may keep returning for another 3,000 years. But every time a comet goes around the sun, the comet loses part of itself. Gases and dust are pulled out of the comet. That's why Halley is now dimmer than it used to be. Next time it visits us, in 2062, it may be even dimmer. Each visit it may get dimmer and dimmer, until it finally disappears. What is this passage mostly about? A) Comets and the sun. B) Why comets are like snowballs. C) Who discovered the first comet. D) Facts about comets.
(Answer)
D

(Question)
A man was walking along the street when he saw a woman carrying a large box. It was half in and half out of her car. So the man went up and said, "The box looks very heavy. Let me give you a hand." "That's very kind of you," the woman said, "I'm having a lot of trouble with it. Maybe it sticks in the car door." "Together we'll soon move it," the man said. "I'll get in and take the other end." And he got in the car. "Right," the man said. "I'm ready," and he began to push the box hard. For several minutes, the man and the woman tried to move the box. Soon they felt very tired. They rested for a moment. Then the woman said, "Let's try again. One, two, three!" They went on moving the box. At last, when they were _ , the man said, "I'm sorry, but I don't think there's any way to get it out of your car." "Get it out?" the woman cried. "I'm trying to get it in! You know?" Who got in the car to move the box? A) The woman. B) The man. C) Both of them. D) Neither of them.
(Answer)
B