物联网构成要素不包括（）。 A.感知技术 B.网络技术 C.人工智能技术 发布时间：2017-05-13 23:23 │ 来源：www.tikuol.com 题型：单项选择题 问题： 物联网构成要素不包括（）。A.感知技术 B.网络技术 C.人工智能技术 D.数码技术
题型：单项选择题 阅读理解。 Jack loves to ride his bike. It's his favorite activity. But he made a big mistake last Wednesday. He acted foolishly (愚蠢地). He did not know the safety rules. He did not think sbout keeping his body safe. Thingking before you act can help you avoid (避免) many accidents. Knowing what to do can keep youor someone close to you safe. Remember that when you ride a bicycle, you share the road with trucks andcars. Read the following rules. They can help you stay away from the risks, or chances, or getting hurt. Title: ________ 1. Always wear a helmet (头盔). 2. Don't ride on the sidewalk so you won't run into someone walking. 3. Ride on bike pathes if they are near you.4. Always ride in the same direction as the traffic. 5. Use hand signals (信号) when you stop or turn. 6. Obey traffic lights and signals.7. Walk your bike across busy crossings. 8. If you ride with a friend, ride one behind the other. 9. If you ride at night, use your headlights, wear light-coloredclothing, and make sure you have reflectors (反光镜) on your bike.1. We know from this passage that maybe Jack _____ last Wednesday. [ ]A. failed an exam B. had an accident C. went to school by bus D. drove to buy bike 2. The sidewalk is left for people who _____. [ ]A. walk B. drive cars C. ride bikes D. get on the bus 3. The underlined word"risk" means _____.[ ]A. safetyB. turning C. danger D. illness 4. It's dangerous to _____ according to the rules.[ ]A. ride in the same direction as the trafficB. ride side by side with someone else C. use hand signals when you stop or turn D. pay attention to traffic lights 5. The best title of the list will be _____. [ ]A. Bike Safety Rules B. Bike Riding Club C. Bike Riding Skills D. Bike accident 查看答案