【正文】 mor helps too—it reduces stress and helps creative thinking.In a wide open area, make a colorful cross out of rocks to show your present position.Choking Aim to hit the top of the chair against your stomach, in the soft part below the bony upsidedown V of the ribs（肋骨）. Make a sudden push against the chair. If you still can’t breathe after six tries, call 911, even if you can’t talk. Write the word choking somewhere nearby, and leave the line open until help arrives.Severe bleedingUse your hand or clean cotton, or paper towels, or a scarf, or any cloth you can find, and push down on the wound until the bleeding stops. But if you put a band around your leg tightly, you’re going to close the vessels（血管）to the entire leg. In this way, you could lose your foot.Bear attackIf you surprise a bear, don’t run away. That invites an attack. Instead, stand up and back away slowly, without looking the bear in the eyes. If it does charge at you, stick out your chest, raise your arms, and spread your legs. Shout at the bear, to frighten it. If it’s going to attack, lie facedown, with your handsheld firmly behind your neck. Play dead until you’re sure the bear is gone.63. When you see a colorful cross made of rocks in the wilderness, you know . A. someone is bleeding B. someone is choking C. someone is lost D. someone is attacked by a bear64. If you are still choking after six tries, you should . A. keep a sense of humor B. call 911 and leave the line open C. use your hand our clean cotton D. lie down with your hands behind your neck65. Don’t tie around your bleeding leg tightly, or you could . A. stop bleeding B. reduce stress C. lose your foot D. cause breathlessness66. The passage is mainly teaching us how to . A. survive the emergencies B. avoid a bear attack C. deal with a choke D. find our way DI have a friend who lives by a threeword philosophy: Seize the moment. Just possibly, she may be the wisest woman on this planet. Too many people put off something that brings them joy just because they haven’t thought about it, don’t have it on their schedule, don’t know it is ing or are too strict to depart from their routine.I can’t count the times I called my sister and said, “How about going to lunch in half an hour?” She would gasp and stammer (結(jié)結(jié)巴巴地說), “I can’t. I have clothes on the line. My hair is dirty. I wish I had known it yesterday, I had a late breakfast, and it looks like rain.” And my personal favorite response: “It’s just Monday.” She died a few years ago. We never did have lunch together. From then on, I’ve tried to be a little more flexible.Life has a way of going faster as we get older. The days get shorter, and the list of promises made to ourselves gets longer. One morning, we awaken, and all have to show for our lives is repetition of “I’m going to” , “I plan on” and “Someday, when things are settled down a bit.”When anyone calls my “seize the moment” friend, she is open to adventure and available for trips. She keeps an open mind on new ideas. Her enthusiasm for life is contagious. You talk with her for five minutes, and you’re ready to trade your bad feet for a pair of Rollerblades and skip an elevator for a bungee cord.My lips have not touched ice cream in 10 years . I love ice cream. The other day, I stopped the car and bought a tripledecker. If my car had hit an iceberg on the way home, I would have died happily.Now ... go on and have a nice day. Do something you WANT to … not something on your SHOULD DO list.67．The example of the writer’s sister serves as ________.A. an argument B. an introductionC. a support D. a conclusion68．The writer thinks that the excuse “It’s just Monday.” is acceptable, because ________.A. it is still likely that they can have lunch together some time laterB. it sounds most reasonable of all the excusesC. it shows respect for the writer’s suggestionD. it indicates the time when they can have lunch together69．The underlined word “contagious” in the fourth paragraph means “________” .A. accurate B. influential C. practical D. flexible70．What is the purpose of the writer by writing this passage?A. To suggest how time flies.B. To persuade busy people to relax.C. To advise people to keep their promise.D. To persuade readers to be flexible on their schedule for practical joy.E“The world’s oceans are slowly getting more acidic.” say scientists. The researchers from California report that the change is taking place in response to higher levels of carbon dioxide in the atmosphere.The lowering of the waters’ PH value is not great at the moment but could cause a serious threat to current ocean life if it continues, they warn. Ken Caldeira and Michael Wickett, f