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. The following statements are true about RDNA research EXCEPT _ . A) the research has been stopped because the created animals carry viruses B) "super-trees" might be widely planted around the world C) scientists have not completely understood DNA D) RDNA research will benefit human beings a lot
A
Rhubarb loved everyone and every dog. Whenever someone came to the house, she was always happy. We had an older Samoyed named Willie, and it was important that Rhubarb got along well with him. She wanted to play, but was very respectful of Willie and left him alone when he was tired and needed to rest. Willie was not well and died about a year later, but I believe Rhubarb's interaction helped him keep going for longer than ifhe had been alone. But the interesting thing about Rhubarb was that she never barked. She would sometimes get excited when she saw a mouse and make a little crying sound. One hot night when she was about 4 years old, we went to bed with the windows open and the doors unlocked. At about 3 a.m., I woke up to the sound of Rhubarb barking and growling. I woke Donald and we got out of bed. Rhubarb was coming toward us with her hackles up. We turned on the lights and noticed the door to the kitchen was open. Then we saw the door leading into the house from the garage was also open. We quickly locked all the doors, and we did not get any sleep that night. The next day I called the police to report a break-in. I told them nothing had been taken, but they sent a police officer over to talk with us anyway. While he was here, we found out several local homes had been burglarized over the weekend. Most people had their wallets and purses stolen. My purse was right next to the door, but Rhubarb had scared the robber away before he or she could steal it. When the police officer left, he said we should keep our doors locked and reward Rhubarb with a big steak dinner. Rhubarb lived to be almost 12, but that night was the only time she barked in her entire life. Fortunately, she never saw the need to warn us of any other danger. We loved her like a member of the family and still miss our sweet dog. What made the author feel fortunate? A) Rhubarb scared the robber away. B) She had such a family member as Rhubarb. C) Rhubarb barked once in her entire life. D) There was no need for Rhubarb to bark.
D
(Q).
The famous English writer, Charles Dickens, is on every British child's school reading list. Though Dickens is one of England's greatest writers, he is not often read. Most people do not read his books because they think they are too long and the language he uses is old-fashioned . Television, however, has rescued this great English writer from disappearing in the modern age. In the UK for several years, Dickens' novels have been turned into exciting television dramas. His latest book to be filmed is his little known story Little Dorrit. Before the story became a 15-part television drama most Britons were unaware that Dickens had ever written it. Most of the Dickens television dramas are so well filmed that English students are likely to watch them in class while studying his book. There are, however, some differences between the books and television dramas. The television dramas often give more time to the exciting parts of Dickens' books. For example, there is far more kissing scenes in the television shows than there are in the books. Some television dramas have also slightly changed Dickens' female characters to make them more acceptable to a modern audience . In Dickens' books his females are often weak and emotional. The TV dramas, however, show them as being fairly independent-minded. Several TV critics have argued that Dickens' stories are actually better suited to television than they are being read as books. Their reasoning is that Dickens wrote his stories for newspapers. A chapter would appear in the newspaper each week so Dickens ended each chapter at an exciting moment. People then would buy the newspaper the following week to find out what happened later. This makes his stories perfect for being shown on television as 15-part programs. Which of the following shows the differences between Dickens' books and television dramas? A) The television dramas are more often used in class for English students than the books. B) The television dramas are better known than the books. C) The television dramas are more exciting than the books. D) There is far more kissing in the books than there are in the television dramas.
(A).
C