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Read the following article and select the best answer. Article: Nuclear radiation has a certain mystery, partly because it cannot be detected by human senses. It can't be seen or heard, or touched or tasted, even though it may be all around us. There are other things like that. For example, radio waves are all around but we can't detect them or sense them without a radio receiver. Similarly, we can't sense radioactivity without a radiation detector. But unlike common radio waves, nuclear radiation is not harmless to human beings and other living things. At very high levels, radiation can kill an animal or human being outright by killing masses of cells in important organs. Even the lowest levels can do serious damage. There is no level of radiation that is completely safe. If the radiation does not hit anything important, the damage may not be serious. This is the case when only a few cells are hit, and when they are killed outright. Your body will replace the dead cells with healthy ones. But if the few cells are only damaged, and if they reproduce themselves, you may be in trouble. They reproduce themselves in an unusual way. They can grow into cancer. Sometimes this does not show up for many years. This is another reason for some of the mystery about nuclear radiation. Serious damage can be done without the knowledge of the person at the time that damage has occurred. A person can be irradiated and feel fine, then die of cancer five, ten, or twenty years later as a result. A child can be born weak or easy to get serious illness as a result of radiation absorbed by its grandparents. Question: Which of the following can be best inferred from the passage? - The importance of protection from radiation cannot be overemphasized . - The mystery about radiation has been solved. - Cancer is only caused by radiation. - Radiation can hurt those who do know about its danger.
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The importance of protection from radiation cannot be overemphasized .

(Q).
Read the following article and select the best answer. Article: Whenever my dog, Barney, comes into the house after having been for a ride in the car, he runs to the pen we have set up for him by the back door. It's not something we intentionally trained him to do. The habit came simply because my husband tended to put him in his pen whenever they came in. After doing it a few times, Barney just figures that's what you do when you come inside after a car ride. It's the same with your thinking. You get into the habit of thinking a certain way and then you'll rarely question it after that. This is especially true when you were growing up. You developed habits that just made things easier for you. You probably didn't even think about them. That's just the way it was and that's what you did. Just like Barney thinks he has to go into his pen, you do things automatically as well. For example, when you were a kid, you may have been told not to "talk back" and to just keep quiet about things that were bothering you. These are habits that might have worked to keep you safe and out of trouble when you were young. Now that you're grown up, you may be finding that these previous strategies are actually causing you problems. In a relationship, not communicating isn't going to work as your partner can't read your mind. What works when you're a child may not work when you become an adult. When you decide you need to change your thoughts, your brain may at first feel that it's not a safe thing to do. Lots of practice and years of experience says it's not. Also, you don't know to question the thought. It's a truth for you. The trick is to look at your results and see if your thoughts are the cause. Be willing to question your thinking and ask yourself if there are thoughts that are hindering you. As you are now in a different phase of your life, different strategies may be needed. Question: As with the dog Barney, people _ . - think in a habitual way - enjoy having a car ride - usually behave in a friendly way - have a good memory
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think in a habitual way

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Read the following article and select the best answer. Article: Recently I was asked,"Are we anywhere near the day when you can climb into a car on Long Island, program it to take you to your niece's house in Chicago, hit enter, and after the first hundred yards, once you hit a main road, the car takes over automatically and you just sit back and enjoy the ride?" It is a question I worry. But I had to answer truthfully:"Absolutely. We are without a doubt near that day."Look, we're already doing it with airplanes. Northrop Grumman's Global Hawk takes off at an air base in the U.S., climbs to 50,000 feet, flies to Australia, and lands at an Australian air base, where there is a grandstand filled with military officials=with no human pilot. The necessary technology is already here. We have radar technology that can be tied to cruise control and brakes, which automatically adjusts your speed based on following distance and preprogrammed settings. It's still a little bit raw, but it does work great. The technology can allow cars and trucks to follow each other in very closely spaced roads. GPS can also change speed with location. Let's say you're in a state with a 75-mph limit and you cross into a state with a 65-mph limit. GPS knows that and adjust your speed accordingly. It's not out of the question to imagine that someday soon you'll be able to start the car, make proper settings, then turn the front seats around and play cards and eat lunch as if you're riding on a train. All in perfect comfort and safety, all the way to that niece's place inprefix = st1 /Chicago. If asked to estimate just how far time is, I'd say a working system is ten years out, practice maybe 20 years. Question: What does the author think of the change in car driving? - It's a terrible thing to come - It's a wonder to drive such a car - It's a pity to give up the skill of driving - It is very likely to come true in the near future
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It is very likely to come true in the near future