DNA is one of the most important discoveries in science. DNA is the plan for the human being, as a blueprint is the plan for a building. DNA makes a person look the way he does. A person's DNA comes from a mixing of his parents' DNA. That's why a child looks like his parents. But, besides controlling things such as height and hair color, DNA can also give people diseases. Scientists are now studying DNA to cure diseases. In the seventies, scientists developed a process called recombinant or RDNA. Although it sounds difficult to understand, RDNA simply means taking DNA from one animal or plant and putting it into another. By doing so, scientists can create new beings. In doing so, scientists can better understand DNA, especially what parts of DNA do what. After they understand DNA, scientists can begin to cure diseases. Often, the new being created will itself be the cure. Besides curing diseases, RDNA research can also do other things. For example, scientists in Japan have already created "super-trees". Trees help humans, because they take CO2, which poisons humans, from the air and turns it into oxygen, which lets humans breathe. "Super-trees" do this too, but do it much faster. As things such as cars and factories have already put much CO2in the area, "super-trees" are badly needed. Unfortunately, there is a serious danger in RDNA research. Scientists want to create animals to cure old diseases, but these new animals may also create new diseases. It will be a serious problem if the animals escape from the science laboratory and into nature. As these animals are not natural, they may _ many new powerful diseases. As a result, RDNA research will create many solutions, but it will also create many problems. You might find this passage in / on a _ . A) fashion magazine B) novel C) scientific newspaper D) sports newspaper
C
(Question)
Seal seizes raft This seal really rocked the boat when he found himself an unusual place to hang out. After the seal came across a boat in the harbor where he lives, he fell inside and wouldn't _ for four days. "One morning the seal just pulled himself aboard," says Ed Stubbings, who owns the boat-turned-bed. Probably thinking the boat was a rock, the seal made himself at home. The seal didn't move an inch-----not even to eat or drink. Stubbings was a little worried that the 500-pound animal might sink it. Luckily on the fifth day, the seal fell back into the water and swam off. Alligator gets new tail When Mr. Stubbs the alligator swims through his pool at the Phoenix Herpetological Society, he looks like any other gator-----except that his tail is made of rubber. Mr. Stubbs is the first alligator known to wear an artificial tail. Mr. Stubbs was brought to the society nine years ago. "His tail was missing when he arrived," says President Russ Johnson. Mr. Stubbs couldn't walk or swim properly. "We showed him how to swim in the water," Johnson says. "But that hurt his back." Later, the scientists used rubber to build an artificial tail attached to Mr. Stubbs's back legs. "Once we put the tail on him, he walked with ease," Johnson says. Dog delivers papers Morgan started her "paper route" when she was young. One day as Morgan and her owner Bill set out on a walk, she spotted a rolled-up paper. To Bill's surprise, Morgan grabbed the object in her mouth, walked back to the house, and dropped it on the doorstep. Morgan enjoyed the activity so much that she wanted to deliver every paper she saw on her walks. Now three-year-old Morgan brings the paper to her owner and neighbors, even in bad weather. "Morgan has a natural instinct to carry things with her mouth," dog behaviorist Pat Miller says. "And she feels rewarded by the activity, so she keeps it up." It can be learned that Mr. Stubbs _ . A) injured his back B) lost his tail and back legs C) quickly got used to his new tail D) was found by Ed Stubbings
(Answer)
C
Ques: Las Vegas cab driver Gerardo Gamboa thought someone must have left a bag of chocolates in the back seat of his vehicle,but it turned out to be $300,000 in cold hard cash. Now,Gamboa is winning honors for honesty after turning in the money he found Monday.The money was returned to an unidentified poker player working in a club.Yellow Checker Star Transportation named Gamboa its driver of the year and rewarded him with $l,000 and a dinner for two at a restaurant. A message left Wednesday to interview Gamboa at the cab company wasn't immediately returned. Gamboa told the Las Vegas Review-Journal he had another passenger by the time he began wondering what kind of chocolates were in the brown paper bag.He cast a glance inside the bag at a traffic light. "I told my passenger,'You are my witness on this,'"the 13-year taxi driver told the Las Vegas Sun,"and then immediately called my company." Gamboa took the six bunches of $100 bills to the company's main office,where Las Vegas police and the club officials returned it to the poker player. Gamboa saidthemangave him a $5 tip after a trip from the Cosmopolitan Resort to the Palms Place Tower,and Gamboa then drove to the Bellagio Resort,where a doorman helping a passenger into the car noticed the bag. It took several hours to check the identity of the owner and return the cash.He took Gamboa's information,but didn't leave a reward. "If he doesn't give me anything,that's OK,"Gamboa told the Sun."I'm not waiting for any kind of return.I just wanted to do the right thing,and I appreciate what the company did for me." Which of the following can be used to describe the driver? A) Honest and helpful. B) Clever and careful. C) Understanding and generous. D) Determined and responsible.
Ans: A
Question: Henry found work in a bookstore after he finished middle school. He wouldn't do anything but wanted to get rich. Mr. King thought he was too lazy and was going to send him away. Henry was afraid and had to work hard. It was a cold morning. It was snowing and there was thin ice on the streets. Few people went to buy the books and the young man had nothing to do. He hated to read, so he watched the traffic. Suddenly he saw a bag fall off a truck and it landed by the other side of the street. "It must be full of expensive things," Henry said to himself. "I have to get it, or others will take it away. " He went out of the shop and ran across the street. A driver saw him and began to whistle , but he didn't hear it and went on running. The man drove aside, hit a big tree and was hurt in the accident. Two weeks later Henry was taken to court . A judge asked if he heard the whistle when he was running across the street. He said that something was wrong with his ears and he could hear nothing. "But you've heard me this time." said the judge. "Oh, I'm sorry. Now I can hear with one ear." "Cover the ear with your hand and listen to me with your deaf one. Well, can you hear me? " "No, I can't, Sir." Why did Henry say that he was deaf? A) He wanted to have a joke with the judge. B) He wanted to get the judge's help C) He wanted to find another piece of work D) He didn't want to pay for the accident.
Answer:
D