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 sill 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 Barnett. 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 Milky 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 signals . 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

I am Tom. My good friends are John and Ann. John's house is next to my house, and we are in the same class. He's thirteen years old and he's tall. He has blond hair and blue eyes. He is very polite . His English is very good and he often helps me. He likes white. He likes wearing  a T-shirt, but in the photo he is in a blue shirt. My friend Ann doesn't go to school. She is young. She is only seven. She has long brown hair and brown eyes. She likes yellow, and she likes bananas very much. She often buys bananas for her mother. Her mother likes her very much. John likes  _  and Ann likes  _  . A) brown; blue B) blue; brown C) white; yellow D) shirts; bananas
C

Are you looking for a fun vacation spot? Do you like to sleep in a hotel, go shopping, and eat fancy meals? If so, Mona Island might Not be the place for you! That's because Mona Island has no hotels, no museums, no shops, and no restaurants. None at all! But if you like nature , Mona Island is an amazing place to take a vacation. Some of the animals living there are not found anywhere else in the world. There are beautiful beaches and caves to explore. The sea around  the island has colorful fish. There are many things that make Mona Island an unusual place. Mona Island is very small, On a map it looks like a tiny green lima bean floating in the big blue ocean. the only way to get there is by taking a long boat ride from the island of Puerto Rico. The government of Puerto Rico takes care of the island and has made it a natural reserve. That means the island's animals and plants are protected from being harmed by people. Mona Island is different from most places because people are not allowed to live there. Only a few park rangers are able to stay. The park ranger's job is to keep Mona Island safe and beautiful. They insist that rules be followed. One rule is that only 100 people at a time can visit the island. That way, the park rangers can make sure the land and animals remain safe. B. How can we get to Mona Island from the island of Puerto Rico? A) By air B) By underground C) By train D) By ship
D

Have you been asked for money by some disabled beggars while you're enjoying shopping?Do you have any pity on them who are so poor and lonely or do you just feel afraid of their terrible shapes?As one of the most special groups,disabled people's living conditions--not only their material conditions,but their mental world,really need improvement. The treatment for disabled people should go like this:First,don't look down upon them.Don't be afraid of looking at the terrible shapes of the disabled.Try to treat them _ .Because they are a part of the society ,we can't discard them.The second is to help them as much as we could.If you can be a volunteer and do some work for the disabled people,that would be very nice.That does help not only to the disabled people but also to yourself because you will feel good after your kind action. If every one of us gives a little love,the world will become a beautiful wonderland! Which of the following statements is TRUE? A) The disabled like to beg in the street. B) Disabled beggars can work to make a living. C) Disabled beggars are not usually treated equally. D) The best way to help disabled beggars is to give them lots of money.

C