(Q).
Read the article and select the best answer. Article: Alan Izhar-Bodner, an Israeli inventor, has developed a swimming suit for divers to breathe underwater without carrying heavy oxygen tanks. His suit makes use of the air that is dissolved in water, just like fish do. The system uses the Henry Law which states that the amount of gas that can be dissolved in a liquid is proportional to the pressure on the liquid. Raise the pressure ---more gas can be dissolved in the liquid. Decrease the pressure --- less gas dissolved in the liquid releases the gas. This is exactly what happens when you open a can of soda; carbon dioxide gas is dissolved in the liquid and is under pressure in the can. Open the can, releasing the pressure, and the gas fizzes out. Bodner's System obviously uses a special machine to lower pressure in part of a small amount of seawater taken into the system; dissolved gas is taken out. The patent reads: A self-contained open-circuit breathing instrument for use within a body of water naturally containing dissolved air. The instrument is adapted to provide breathable air. The instrument contains an inlet for taking out a quantity of water from the body of water. It further contains a separator for separating the dissolved air from the quantity of water, thus gaining the breathable air. The instrument further contains an outlet for expelling the separated water back into the body of water, and another outlet for removing the breathable air and supplying it for breathing. The air is supplied so as to enable it to be expelled back into the body of water after it has been breathed . Human beings have been thinking about how to breathe underwater since they started swimming. This long-held desire plays an important part in one of the first great science fiction novels, Jules Verne's 20,000 Leagues Under the Sea. Question: This passage is mainly about _ . Options: A: how Bodner invented the instrument for breathing underwater B: why Bodner invented the instrument for breathing underwater C: how Bodner's instrument for breathing underwater works D: how Bodner's instrument is used by divers for breathing underwater
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C

(Q).
Read the article and select the best answer. Article: In 1987, while serving as the public affairs officer at Fort Bragg, I would frequently visit the local high schools to speak to the students about the Army. As alieutenant colonel , I found it particularly rewarding to talk with the teenagers about the benefits of military service, if only for a few years of their lives. During one of these visits, I reported to the secretary in the principal's office to let her know that I was here for the third-period class. I was a little surprised when she told me. "The principal would like to see you before you go to the class." As I entered his office, I was greeted by a gentleman who appeared to be in his late thirties, and he welcomed me with a smile and a handshake. "You don't remember me, do you?" he said. I looked closely at the face again and could not recall where we may have met before. "You were my company commander in basic training at Fort Jackson in 1970," the principal said. "Let me help you out," he suggested. "You gave me a three-day pass to go home and see my newborn baby." I immediately remembered the incident! "Yes," I said. "I remember now." It was the only three-day pass I had issued because the soldiers were on their way to Vietnam immediately after they finished training. But I knew if I did not let him go home to see his son and _ , I would regret denying the opportunity he had to be with his family. "Come on, Colonel. I'd like to introduce you to 'the baby'. He's in your third-period class. By letting me go see him, you gave me a reason to stay focused and to come home safe from that war. Thank you , sir." It was the most rewarding class I had ever given, and I had no problem in telling the students about the bonds of friendship and the values that Army life can provide...and that can last a lifetime. Question: In the writer's opinion, talking to teens about the Army is _ . Options: A: a forced task B: a pleasant thing C: an unavoidable duty D: an embarrassing experience
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B

(Q).
Read the article and select the best answer. Article: President Abraham Lincoln often visited hospitals to talk with wounded soldiers during the Civil War.Once,Lincoln went over to the bedside of a young dying soldier. "Is there anything I can do for you?"asked the President. The soldier obviously didn't recognize Lincoln, and with some effort he was able to whisper, "Would you please write a letter to my mother?" So the President carefully began writing down the soldier's words,"My dearest mother, I was badly hurt while doing my duty. I'm afraid I'm not going to recover. Don't _ too much for me, please. Kiss my sister Mary for me.May God bless you and Father." The soldier was too weak to continue, so Lincoln signed the letter for him and added, "Written for your son by Abraham Lincoln."The young man asked to see the note and was astonished when he discovered who had written it."Are you really the President?"he asked. "Yes, I am,"replied Lincoln quietly.Then he asked if there was anything else he could do."Would you please hold my hand?"asked the soldier."It will help to see me through to the end." In the quiet room, the tall gaunt President took the soldier's hand and spoke warm words of encouragement until death came. Question: When the soldier's mother read the letter, she would probably be _ . Options: A: sad but feel greatly relieved B: apologetic but grateful C: calm and thankful D: sorry and feel it unexpected
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A