经长期临床应用证明安全、有效，对细菌耐药性影响较大，或者价格相对较高的抗菌药物是（） 发布时间：2017-08-11 18:51 │ 来源：www.tikuol.com 题型：单项选择题 问题： 经长期临床应用证明安全、有效，对细菌耐药性影响较大，或者价格相对较高的抗菌药物是（）。A.非限制使用级B.非自主使用级C.限制使用级D.特殊使用级
题型：单项选择题 阅读理解。A. It can protect your brain from being hurt in a bike accidentB. Go for bike rides with your kids so you can show them what safe riding looks likeC. Never wear ear-phones while bikingD. You have to choose good shoes E. Check your child's bike to keep it safe and in good condition Bike Safety Bike riding is a great way to get exercise and fresh air and share time as a family. But before your kidsrush out and start biking, there's an important thing you need to consider -safety. Helmet (头盔)Basics Always wear a helmet when riding a bike, no matter where you are or how short the ride is. 1. ___. Here's why: Many bike accidents mean brain damage or death for someone who does not wear one while riding. To protect against brain injury, make sure your kids wear a correctly fitting helmet on every ride. Safe Clothing What kids wear when riding a bike is also very important for safety. Bright-colored clothes will help kids be visible on the road. Besides, 2. ____. Kids should never ride barefoot(赤脚)! Rules of the Road for Bike Riding Here are some must-know safety tips to teach kids: Stop at all stop signs and obey traffic lights just as cars do. Always stop and check for traffic in both directions when leaving a driveway. 3. ____. It's important to hear everyone else on the road. Making Safety a Family Activity One of the best ways to help kids learn safe bike riding is to set a good example by following therules of the road yourself. 4. ______. It's also a great way to stay active as a family and spend valuable time with your kids! 查看答案