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Just now, I entered the website “Topic for Today”, I feel 36 (interest) in the report on middle school students’ using cell-phones on campus．In fact, many students now come to school 37 cell-phones．My schoolmates have different opinions．Some think 38 is convenient to get in touch with others with the cell-phone, which also makes you feel safe especially in time of trouble． 39 , it is nice to enjoy various functions of different cell-phones． 40 think differently．First, the cell-phone is not 41 must in school, as 42 are some IC phones in the school 43 (make) it easy to call others．Second, many students often play e-games and send e-messages with their cell-phones, even in class, 44 will surely have bad effects on their study．What’s more, it will result in a great waste of time and money．In my opinion, the cell-phone is a 45 (use) tool in our daily life．But it doesn’t mean we can use it freely in school．
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According to a review of evidence in a medical journal runners live three years____61___(long) than non-runners You don't have to run fast or for long____62____(see)the benefit You may drink, smoke, be overweight and still reduce your risk of ____63____（die）early by running.
While running regularly can make you live forever, the review says it ____64____ (be)more effective at lengthening life ____65____walking , cycling or swimming. Two of the authors of the review also made a study published in 2014 ___66_____showed a mere five to 10 minutes a day of running reduced the risk of heart disease and early deaths from all ____67____(cause).
The best exercise is one that you enjoy and will do. But otherwise ……
It's probably running. To avoid knee pain, you can run on soft surfaces to ___68____(strength)your leg muscles(肌肉),avoid hills and get good running shoes. Running is cheap, easy and it's always ___69___(energy). If you are time poor, you need run for only half the time to get the same benefits other sports, so perhaps we should all give ____70____a try.
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Diets have changed in China﹣and so too has its top crop． Since 2011，the country （1） （grow）more corn than rice． Corn production has jumped nearly 125 percent over （2） past 25 years， while rice has increased only 7 percent．
A taste for meat is（3） （actual） behind the change：An important part of its corn is used to feed chickens， pigs， and cattle． Another reason for corn's rise： The government encourages farmers to grow corn instead of rice （4） （improve） water quality． Corn uses less water（5） rice and creates less fertilizer（化肥） runoff． This switch has decreased （6） （pollute） in the country's major lakes and reservoirs and made drinking water safer for people．
According to the World Bank， China accounts for about 30 percent of total（7） （globe）fertilizer consumption． The Chinese Ministry of Agriculture finds that between 2005﹣when the government （8） （start） a soil﹣testing program（9） gives specific fertilizer recommendation to farmers ﹣ and 2011， fertilizer use dropped by 7.7 million tons．That prevented the emission（排放） of 51.8 million tons of carbon dioxide．China's approach to protecting its environment while （10） （feed） its citizens "offers useful lessons for agriculture and food policymakers worldwide，" says the bank's Juergen Voegele．
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Does the name of the college you attend really matter? Research on the question ________ (suggest) that, for most students, it doesn't. What students do at college seems to matter much more than ________ they go. The students benefitting most from college are those ________ are totally engaged (参与) in academic life. taking full advantage of the college's chances and resources (资源). Students should have a proper attitude towards college before thinking about which college to attend, and it's never too early to make necessary preparations for a healthy and ________ (meaning) college experience.
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Earth Day, ________ (mark)on 22 April, is an annual event aiming to raise public awareness about environmental protection. First celebrated ________ 1970, the Day now includes events in more than 190 countries and regions (地区). No matter what you like to do, there is a way to get involved in various ________ (activity) on Earth Day. You can plant a tree, make a meal with locally grown vegetables, or save power-the possibilities are endless.
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On the first day of my first grade, I stood by the door with butterflies in my stomach. I ________ (voice) my biggest concern to my mother. "How will I make friends?" She handed me advice. "Be yourself." For the past 20 years. I have lived by these words. Soon I will graduate and become part of the real world. Nervously ________ (face) challenges. I know I will whisper to ________ (I) the two simple words "Be yourself".