Q: Is there intelligent life on other planets? For years, scientists said "no" or "We don't know." But today this is changing. Seth Shostak and Alexandra Barnett are astronomers. They believe intelligent life exists somewhere in the universe. They also think we will soon contact these beings. Why do Shostak and Barnett think intelligent life exists on other planets? The first reason is time. Scientists believe the universe is about 12 billion years old. "This is long enough for other planets to have intelligent life," say Shostak and Barnet. The second reason is size--the universe is huge. "Tools like the Hubble telescope have shown that there are at least 100 billion galaxies," says Shostak. "And our galaxy, the Milk Way, has at least 100 billion stars. Some planets going around these stars might be similar to Earth." In the past, it was hard to look for signs of intelligent life in the universe. But now, powerful telescopes allow scientists to discover smaller planets--the size of Mars or Earth in other solar systems. These planets might have intelligent life. Have beings from space already visited Earth? "Probably not," says Shostak. "It's a long way away. However, intelligent beings may contact us in other way, such as radio signs. In fact, they may be trying to communicate with us now, but we don't have the right tools to receive their messages. However, this is changing. By 2025, we could make contact with other life forms in our universe and we might help each other." Seth Shostak and Alexandra Barnett are _ . A) astronomers. B) farmers C) singers D) drivers
A: A

Q: Be careful on April 1st! When your classmates say "Your shoes untied !", it may not be true. And if you find your alarm clock is set back an hour, this may be a joke too. April Fool's Day is a traditional festival. On that day people play harmless jokes on others and then shout, "April Fool!" It's a "for-fun-only" day, so people don't buy gifts or get the day off work or school. April Fool's Day started in France in the 16th century . At that time, New Year's Day was between March 25th and April 1st. When New Year's Day changed to January 1st in the mid-1560s, some people still celebrate it on April 1st. Others played jokes on them and called them "April Fools". Each country celebrates April Fool's Day differently. In France, it is called "April Fish". The Frenchmen fool their friends by sticking paper fish to their friends' backs. When someone finds out this joke, they shout, "April Fish!" In England, it is bad luck to play an April Fool's joke on someone in the afternoon. Americans play small tricks on friends and strangers alike. When was New Year's Day about five hundred years ago in France? A) On March 25th. B) Between April 1st and April 25th. C) Between March 25th and April 1st. D) On April 1st.
A: D

Q: Do you know how to be a healthy kid? Here are some rules you should follow. First, eat different food, especially fruits and vegetables. You may have a favorite food, but you'd better eat something different. If you eat diff You can't watch TV for more than two hours a day errant food, you will probably get more nutrients your body needs. Second, drink water and milk as often as possible. When you are really thirsty, cold water is the No. 1 choice. Milk is a great drink that can give you more calcium your body needs to grow strong bones. Third, listen to your body. How do you feel when you are ill? When you're eating, notice how your body feels and when your stomach feels comfortably full. Eating too much will not make you feel comfortable and make you feel fat. Fourth, limit screen time. Screen time is the time you watch TV, DVDs and videos, or using computers. It is good to take more exercise such as basketball, bike riding and swimming. You can't watch TV for more than two hours a day. Fifth, be active. One thing you'd like to do, as a kid, is to find out which activity you like best. Find ways to be active every day. According to the passage, you should follow _ rules if you want to be healthy. A) four B) five C) nine D) fifth
A: B

Q: A young man from a village called Nawalapitiya married a young woman from Maiyuwa, a small village. They lived with the man's big family-his parents, his brothers, their wives and children. The family kept an elephant, in which the woman soon took a great interest. Every day she fed it with fruit and sugar. Three months later, having quarreled with her husband, the woman went back to her parents' home. Soon the elephant refused to eat and work. It appeared to be ill and heartbroken. One morning after several weeks the animal disappeared from the house. It went to the woman's home. On seeing her, the elephant waved its trunk and touched her with it. The young woman was so moved by the act of the animal .So she went back to her husband's home. The writer wrote the story in order to _ . A) show that elephants are very clever B) tell how a woman trained a wild animal C) show that women care more for animals than men do D) tell how an animal got a husband and a wife together again
A: D