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【简答题】
Sean and Danielle were leaving the music s tore when they heard the crash. 'What do you suppose that was?' asked Sean. 'I don't know for sure,' said Danielle, 'but it sure sounded bad. It's right over there. Let's go and look.' Sean and Danielle knew they would see an accident. But they didn't know what to expect. There in the middle of the street was a bicycle that had been hit by a car. The bicycle rider was sitting in the street, shaking his head. 'Look at that,' said Sean, 'he's not even wearing a helmet. He is one lucky guy'. 'No kidding,' Danielle replied. 'Look at the driver of the car. She's just as lucky. She's not wearing a seat belt. Sean and Danielle are right. The bicycle rider is very lucky, he was not hurt. Riding a bicycle is a lot of fun, but it can also be very dangerous. You have to pay attention all the time to what you're doing. You also have to follow safety rules. When you ride a bicycle, remember that you share the road with cars and trucks. These vehicles are a lot bigger than you are. So, always wear a helmet when riding your bicycle. Always means 'every time' even if you are just riding around the block. Follow the same rules as car and truck drivers. Bicycle riders also have some special rules. Here are some special rules you should follow: ● Do not ride your bicycle on the sidewalk. By not riding on the sidewalk, you won't run into a pedestrian. ● Ride on bike paths or trails when they are available. ● Always ride in the same direction as traffic. ● Always ride on the right-hand side of the road. ● Wh en you ride with a friend, do not ride next to each other. Ride in single field, one behind the other. ● Obey all traffic signals and signs. Stop at all stop signs. ● Walk your bicycle across busy crossings. ● Be sure to use hand signals when you turn and stop. Follow these safety rules when riding a bicycle at night. ● Have a headlight that works. ● Have these r eflectors on your bicycle: yellow or white in front, and red ones on the pedals and back. ● Wear light-colored clothing so drivers can see you. You should always keep your bicycle in good working order. Make sure the brakes work properly and that your tires have enough air. If you find anything wrong with your bike, fix it or have it fixed before you ride it again. 小题1:How did Sean and Danielle know that they would see an accident? A.They saw somebody falling off the bike. B.They heard the sound of the crash. C.They were asked to offer some help. D.They remembered what might happen. 小题2:What Sean and Danielle saw in the middle of the street __________. A.were a bicycle, the rider, a car and the driver B.was a bicycle under the damaged car C.was a car without safe belt and the helmet D.surprised both the rider and the car driver 小题3:Why did Sean and Danielle consider the rider and the driver lucky? A.Because the bicycle and the car were lost. B.Because the rider didn’t wear his helmet. C.Because they both were not badly hurt. D.Because the driver didn’t wear the seat belt. 小题4: From the passage, we learn that _________. A.carelessness can result in accidents B.we can’t ride bicycles in the street C.the driver was quite rude to the rider D.the bicycle rider was sent to hospital 小题5:Which of the following breaks the rules for a safe bicycle riding? A.Get off your bicycle and walk across busy crossings. B.Follow the safety rules as the car and truck drivers do. C.Fix light reflectors to your bicycle when riding at night. D.Ride next to other riders, but not too close to each other
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参考答案:
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【单选题】男性,25岁,2天前不明原因出现干咳、胸闷,继之明显喘憋。给予静滴青霉素治疗无效。近3年来,患者常于秋季出现发作性咳嗽、气短。查体:端坐呼吸,呼吸急促,皮肤黏膜轻度发绀,双肺呼吸音减低,散在哮鸣音,心界不大,脉搏120次/分,无杂音,有奇脉。诊断应首先考虑为()
A.
慢性支气管炎
B.
支气管哮喘
C.
肺源性心脏病
D.
心源性哮喘
E.
急性心包炎
【多选题】下列说法不正确的是:()
A.
H 2 S溶液中,c(S 2- )=K Ø a 2 (H2S);H 3 PO4溶液中,c(PO 4 3- )=Ka 3 (H 3 PO4)
B.
在0.1 mol L -1 HAc-0.10 mol L -1 NaAc缓冲溶液中,与在0.50 mol L -1 HAc-0.10 mol L -1 NaAc的缓冲溶液,分别加入1 mL 0.10 mol L -1 的HCl,其PH变化相同
C.
计算HPO 4 2 --PO 4 3- 缓冲溶液的PH时,必须按PO 4 3- 水解平衡来计算,而不能用公式pH=pK Ø a 3 -lg(c a /c s )
D.
在Na 3 PO 4 溶液中,Na + 浓度是PO 4 3- 浓度的3倍
【单选题】下列对医嘱种类的描述不正确的是
A.
长期备用医嘱须由医生注明停止时间后方可失效
B.
临时备用医嘱有效时间在12小时以内
C.
临时备用医嘱执行后记录在长期医嘱单上
D.
长期医嘱有效时间在24小时以上
E.
临时医嘱一般只执行一次
【单选题】自然界中的一些具有周期性的非生物现象记录也可以用来重建过去的气候变化。这些非生物现象不包括
A.
初雪
B.
降雨
C.
河湖的封冻
D.
初雷
【单选题】Photoshop 中如果想在现有选择区域的基础上减少选择区域,应按住下列哪个键?
A.
Alt
B.
Ctrl
C.
Shift
D.
Tab
【单选题】自然界中的一些具有周期性的非生物现象记录也可以用来重建过去的气候变化。这些非生物现象不包括?
A.
初雪
B.
降雨
C.
河湖的封冻
D.
初雷
【单选题】下列对医嘱种类的描述不正确的是
A.
长期备用医嘱须由医生注明停止时间后方可失效
B.
临时备用医嘱有效时间在12小时以内
C.
临时备用医嘱执行后记录在长期医嘱单上
D.
长期医嘱有效时间在24小时以上
E.
时医嘱一般只执行一次
【单选题】下列对医嘱种类的描述不正确的是
A.
长期备用医嘱须由医生注明停止时间后方可失效
B.
临时备用医嘱有效时间在12小时以内
C.
临时备用医嘱执行后记录在长期医嘱单上
D.
长期医嘱有效时间在24小时以上
E.
时医嘱一般只执行一一次
【单选题】中国邮政小包的包裹重量一般不超过( )
A.
1KG
B.
2KG
C.
1.5KG
D.
2.5KG
【单选题】关于锐捷交换机对于端口镜像功能,下列 描述错误的是()
A.
交换机配置基于流的镜像可以实现源端口RX但是不能实现TX方向的镜像
B.
配置一对多端口镜像,在交换机配置Remote Vlan,需要在非镜像目的口中将Remote Vlan 修剪掉
C.
交换机镜像目的端口无法实现接收镜像数据流的同时也作为普通口访问外网
D.
交换机的镜像可以配置源端口为万兆端口为千兆端口,但这样导致部分镜像流量丢失
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