题目

根据机动车的运动情况，绘制如图 图像，已知其在水平路面沿直线行驶，规定初速度 的方向为正方向，运动过程中所受阻力恒定．请判定以下合理的说法是（ ） A . 机动车牵引力恒定且大于阻力 B . 机动车的初速度 C . 机动车的加速度为 D . 机动车在前3秒的位移是 答案：BOnline Money EarningYes, you can earn money online without any investment or without anytime limit. I have many useful easy methods for earning easy money while we all spend our useful time on the Internet by surfing, chatting, downloading and other work. There is no need to stop any other work. We can earn with or without our daily routine. Here I tell you the complete method for online earning.First MethodEarn money with“Bux. to”. You can earn money through “Bux.to” by clicking on ads on“Bux. To” site. First you need to open an account at“Bux. To”.“Bux. To” is a new international and free English based service that allows advertisers to reach thousands of potential customers by displaying their ads on our“Surf Ads”page. An exact calculated percentage of all advertising income is paid to our members. “Bux. to” makes money through advertising.How you make moneyYou view websites in 30 seconds through the “Surf Ads” page. Once the 30 seconds is up, you’ll either get a green tick(对号) sign or a red “x”. The green tick sign means you’ve earned $0.01and the “x” means you have not earned money for the visit. You’ll get red “x”s when you have more than one website from the “Surf Ads” page open. When this happens, you get no credit.Earnings exampleYou click 10 ads per day =$0.1020 referrals(转送) click 10 ads per day =$2.00Your daily earnings =$2.10Your weekly earnings =$14.70Your monthly earnings =$63.00How to get paidIf you have at least $10.00 accumulated, you can click on your account balance within your states area and it will meet your request. At present, it only makes payments through “AlertPay”. It will soon be using other methods of payment.AlertPay is the payment processing solution that we use to pay members. Your AlertPay address is the e-mail address you use to register with AlertPay. You can get a free AlertPay account at http:// alertpay. com.Method 2 will publish soon…1.What is the author’s purpose of writing this passage?A. To tell an interesting story.B. To introduce a surprising way to earn money.C. To solve a puzzling problem.D. To present an exciting research.2.You can earn money by ________.A. chatting onlineB. advertising some productsC. clicking on advertisementsD. choosing green ticks or “x”s3.The underlined word “accumulated” can be replaced by “________”.A. wasted. B. spent.C. lost. D. gathered.