%If you get into difficulties, this is what you should do Keep calm. Save your strength and your breath Try to float( )on the water by moving your feet as if you are climbing some stairs Raise your right arm and cry for help ※ Remember: a red flag means that it is dangerous for all swimmers to enter the water a blue flag means that it is dangerous for children and weak swimmers to enter th water 46. Swimming is a good spc A. and you'd better go swimming alone B. but you'd better not go swimming after a tiring climb C. so you should stay in the water for a long time D. and you may swim when you see a red flag 47. Rings and other swimming aids A. can not be believed in when swimming B. will never let you sink C. will never be lost D. are useless at all in swimming 48. It is dangerous if A. you swim with others B. you stay in the water for a short time C. you can not swim, but you go boating alone D. you wear a life jacket when boating 49. If you see a blue flag, you should know may swim there B. only childre D. strong swimmers 50. If you get into trouble, you should B. climb the stairs C. put up your right arm for help D. ask for a red flag B(词数:约230;建议用时:6分钟) Have you heard of e- waste(电子垃圾), which can be produced every day? How do you deal with your computers, MP4 players and mobile phones when theyre broken or you want a new one Most people just throw them away. With the development of electronic industry(EEfF Ne), e-waste pollution has become a serious problem. According to the United Nations,in 2014, people around the world produced 41.8 million tons( AE)of e-waste and only recycled 6.5 million tons. The US was the biggest waster, producing 7. 1 million tons. China came second with 6 million tons It's important to pay attention to e-waste. It can either be valuable or harmful, depending n how we deal with it.E- waste is a valuable urban mine(城市矿藏). The value of the※If you get into difficulties，this is what you should do： ·Keep calm.Save your strength and your breath. ·Try to float(漂浮) on the water by moving your feet as if you are climbing some stairs. ·Raise your right arm and cry for help. ※Remember： ·A red flag means that it is dangerous for all swimmers to enter the water. ·A blue flag means that it is dangerous for children and weak swimmers to enter the water. 46．Swimming is a good sport，________. A．and you'd better go swimming alone B．but you'd better not go swimming after a tiring climb C．so you should stay in the water for a long time D．and you may swim when you see a red flag 47．Rings and other swimming aids ________. A．can not be believed in when swimming B．will never let you sink C．will never be lost D．are useless at all in swimming 48．It is dangerous if ________. A．you swim with others B．you stay in the water for a short time C．you can not swim，but you go boating alone D．you wear a life jacket when boating 49．If you see a blue flag，you should know ________ may swim there. A．all swimmers B．only children C．nobody D．strong swimmers 50．If you get into trouble，you should ________. A．keep silent B．climb the stairs C．put up your right arm for help D．ask for a red flag B (词数：约 230；建议用时：6 分钟) Have you heard of e-waste(电子垃圾)，which can be produced every day? How do you deal with your computers，MP4 players and mobile phones when they're broken or you want a new one? Most people just throw them away. With the development of electronic industry(电子产 业)，e-waste pollution has become a serious problem. According to the United Nations，in 2014，people around the world produced 41.8 million tons(吨)of e-waste and only recycled 6.5 million tons. The US was the biggest waster，producing 7.1 million tons. China came second，with 6 million tons. It's important to pay attention to e-waste. It can either be valuable or harmful，depending on how we deal with it. E-waste is a valuable urban mine(城市矿藏)．The value of the