(Question)
Have you ever thought about seeing the world for free? Although it may sound impossible, there's a growing community that is making that dream one step closer. The community is called Couchsurfing. The idea is that people open their homes up to travelers for free, and in exchange both people will learn from each other. Instead of paying a lot of money staying in hotels, living with locals is both cheap and authentic . Maybe you'll find a hidden attraction in the city. It may be a good place where people like to visit. This is also your chance to ask what life in their country is really like. It also works as a culture exchange. For example,if you play the guitar and your host is a great cook, teach him or her how to play to say thank you for the dinner. This type of exchange is popular. But what are some manners of being a good Couchsurfer? First, be careful about cultural taboos . For example, if you eat with Indians, never use your left hand. In Indian culture, left hands are used for the toilet. Also, when you are going to leave, it's a good idea to prepare a small gift. This shows your _ to the home owner. Now, are you ready to travel like a local? Where will you surf first? According to the passage, what's the Couchsurfing? A) A travel way to offer the travelers their homes for free. B) Offer food to the travelers for free. C) Show some places of interest for free. D) Take the travelers to some places in the city for free.
(Answer)
A

(Question)
Accidents often happen. It's necessary for us to remember these tips. On your way home or to school: Wait for the green traffic light, and look left and right before you cross the road. If you see a car coming, don't cross until it really stops. At school: Never run around too fast at school. When students around you begin to push, try to hold something. If you fall down in a crowed place, cover your head with both hands. When there's a fire: Keep quiet and leave quickly. Use a piece of wet cloth to cover your mouth and nose so that you don't breathe in smoke. If your clothes catch fire, drop to the ground and roll from side to side to put out the fire. For eating: Wash fruit like apples or pears carefully before you eat it. And if your food looks or smells bad, don't eat it. About strange invitations: If an Internet friend asks to meet you, tell your parents about it. Don't go alone. Which of the following is TRUE? A) We may cross the road before a car stops. B) A piece of dry cloth may help you in a fire. C) If there is something wrong with food or fruit, stop eating it. D) You may meet an Internet friend in his or her own home.
(Answer)
C

(Question)
A Nepalese teenager had made a PS 23 solar panel ( ) using human hair. Milan Karki, who is 18 years old and lives in a village, used human hair to replace silicon, which is a common but expensive part of solar panels. By using hair as a replacement, Karki says that solar panels can be produced for around PS 23. Karki got the idea from a Stephen Hawking book, which explained how to create energy from hair. The device that Karki has showed can produce 18w of energy -- plenty to _ a mobile phone. "Half a kilo of hair can be bought for only 16p in Nepal and last a few months; but a pack of batteries would cost 50p and last a few nights," according to The Daily Mail. The solar panel is easy to service as the hair is easy to replace. Karki has now sent out several devices to other places near his home for testing. He said, "First I wanted to provide energy for my home, then my village. Now I am thinking for the whole world." From the passage we know Karki is A) handsome and clever B) clever and helpful C) lazy but clever D) handsome and helpful
(Answer)
B