book5 Unit 5课时作业

课时作业(十)Section ⅡLearning about Language& Using LanguageⅠ.阅读理解AA nosebleed can be frightening to get or see，but try to stay calm.Most nosebleeds look much worse than they really are.Almost all nosebleeds can be treated at home.If you get a nosebleed，sit down and lean slightly forward.Keeping your head above your heart will make your nose bleed less.Lean forwards so that the blood will flow out of your nose instead of down the back of your throat.If you lean back，you may swallow the blood.This can make you uncomfortable.Use your thumb and index fingers to press together the soft part of your nose.Keep holding your nose until the bleeding stops.Don’t let go for at least 5 minutes.If it’s still bleeding after that，hold it again for 10 minutes straight.You can also place an ice pack across the toe of your nose.Once the bleeding stops，don’t do anything that may make it start again，such as bending over or blowing your nose.The most common causes of nosebleeds are dryness(often caused by indoor heat in the winter)and nose picking.These two things work together—nose picking occurs more often when the liquid in the nose is dry.Other，less common causes include injuries，colds or cocaine use.Children may stick small objects up their nose.Old people may have infections or high blood pressure.The cause of nosebleeds is often unknown.Most nosebleeds aren’t serious.They occur in the front part of thenose and stop in a few minutes.A few nosebleeds start in large vessels(血管)in the back of the nose，which can be dangerous.They may occur after an injury.This type of nosebleed is more common in the elderly and is often due to high blood pressure，daily aspirin use or bleeding disorders.语篇解读：本篇主要讲述了流鼻血的原因及急救措施。

1.According to the text，nosebleeds ________.A．are not frightening to get or seeB．are usually not serious and can be cured with the right method at homeC．must be treated by doctors in the hospitalD．aren’t dangerous at all答案：B解析：推理判断题。

由第一段最后一句可知D项正确，其余选项与文意不符。

2.Which of the following is NOT the right way to treat nosebleeds？A．Cool your nose with ice or other cold things.B．Press your nose slightly with your fingers.C．Lean backwards to slow down the flow of flood.D．Lean your head forwards，just above your chest.答案：C解析：细节理解题。

由第二段第一句可知正确的方法是lean forwards，而不是lean backwards。

3.What’s the main idea of Paragraph 4？A．Nosebleeds are caused by some diseases.B．Nosebleeds are caused by the dry weather.C．Your nose may be infected.D．The causes of nosebleed.答案：D解析：主旨大意题。

第四段主要讲述了流鼻血的原因。

4.Which of the following is TRUE according to the passage？A．It may be more dangerous if the back part of your nose bleeds.B．Nosebleeds can cause the disease related to blood pressure in older people.C．Nosebleeds occur to kids because of infections.D．Many nosebleeds are not as serious as they look.答案：A解析：细节理解题。

根据最后一段第一句可知鼻子后部的血管流血会更严重。

BBicycle SafetyOperation Always ride your bike in a safe，controlled manner on campus(校园)．Obey rules and regulations.Watch out for walkers and other bicyclists，and always use your lights in dark conditions.Theft Prevention Always securely lock your bicycle to a bicycle rack—even if you are only away for a minute.Register your bike with the University Department of Public Safety.It’s fast，easy，and free.Registration permanently records your serial number，which is useful in the possible recovery of the bike stolen.EquipmentBrakes Make sure that they are in good working order andadjusted properly.Brakes Make sure that they are in good working order and adjusted properly.Helmet A necessity，make sure your helmet meets current safety standards and fits properly.Lights Always have a front headlight—visible at least 500 feet in front of the bike.A taillight is a good idea.Rules of the RoadRiding on Campus As a bicycle rider，you have a responsibility to ride only on streets and posted bicycle paths.Riding on sidewalks or other walkways can lead to a fine.The speed limit for bicycles on campus is 15 mph，unless otherwise posted.Always give the right of way to walkers.If you are involved in an accident，you are required to offer appropriate aid，call the Department of Public Safety and remain at the scene until the officer lets you go.Bicycle Parking Only park in areas reserved for bikes.Trees，handrails，hallways，and sign posts are not for bicycle parking，and parking in such spots can result in a fine.If Things Go WrongIf you break the rules，you will be fined.Besides violating rules while riding bicycles on campus，you could be fined for：⇒No bicycle registration$25⇒Bicycle parking banned$30⇒Blocking path w ith bicycle$40⇒Violation of bicycle equipment requirement$35语篇解读：本文为一篇说明文，属于校园生活话题。