根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。【小题1】Home is a place where one feels safe and sec

根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。
【小题1】
Home is a place where one feels safe and secure but unfortunately, it is also a place where you may have serious accidents. The biggest single cause of accidents is human error! So you must take care of yourself!
Causes of home accidents.
【小题2】 Balconies, fireplaces, staircases, ponds, glass doors or kitchens can all increase the risk of accidents. Hot water, household chemicals, fireplaces, matches, alcohol and sharp objects are also potential dangers. Loosing balance, clumsiness and being tired or careless can be the reasons for these accidents. What’s more, if you are under stress or when a routine is changed, you may also be under the risk of home accidents.
Most common types of accidents.
You can see many dangerous home accidents happening around you. The most common ones are slips, falls and collisions. They are not fatal but often result in broken bones. The second most common types of accidents are burns, swallowed objects or breathed in chemicals.
【小题3】 Some other possible dangers at home are poisioning, choking, drowning, electric shocks, and animal bites. Some of these accidents may even result in death.
The importance of education.
Sometimes the simplest precaution protects you from the greatest harm. 【小题4】 The Ministry of Health can train professionals to educate nursing staff, ordinary people, voluntary workers, teachers, nursery staff and parents in home accident prevention and control. When people know first aid, they can reduce the risk of serious injuries.
【小题5】
You must take measures to make your home a safer place. For instance, keep knives and other sharp objects in a safe drawer. Wipe up any liquids on the floor immediately in order not to slip or fall. Keep hot objects away from the reach of children. You also mustn’t leave children unattended near a bath that has water in it. If you keep furniture away from windows, you may prevent possible harm. Store all medicines, household chemicals, and so on, preferably in a locked box and do not forget to keep all dangerous substances in their orginal containers. In brief, if you want to protect yourself, be careful not to be sorry!A．Is home really safe?B．Nursing home injuries.C．Ways of preventing accidents.D．The design of houses can cause accidents.E. Accidents can be avoided at home.
F. They especially affect children and need hospital attendance.
G. Therefore, it is important that we should educate people.A

(答案→)A 解析：本文讲述的现在引起普遍重视的家庭安全事故的原因，以及人们为了预防这些安全事故所采取的措施方法。【小题1】A 根据本段第一句Home is a place where one feels safe and secure but unfortunately, it is also a place where you may have serious accidents.根据讲述的是家是很多人感觉到安全的地方，但是同时也会有很多的家庭的事故发生。故A正确。【小题2】D 根据下句Balconies, fireplaces, staircases, ponds, glass doors or kitchens can all increase the risk of accidents.可知家庭里的很多的设施设备会导致很多家庭事故的发生，故D项正确。【小题3】F 根据上一句The second most common types of accidents are burns, swallowed objects or breathed in chemicals.可知很多这样的问题都不严重，但是很可能影响孩子需要医疗救助。故F正确。【小题4】G 根据前后句Sometimes the simplest precaution protects you from the greatest harm.和The Ministry of Health can train professionals to educate nursing staff, ordinary people, voluntary workers, teachers, nursery staff and parents in home accident prevention and control.都在说明教育人们这样安全的重要性，故G项正确。【小题5】C 根据本段第一句You must take measures to make your home a safer place.可知本段讲述的是预防事故的方法和措施。故C正确。

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0解析分析：应先根据x2-x+1=0，得到x2=x-1，要求的式子的指数较大，应降次整理．解答：∵x2-x+1=0
∴x2=-x-1，
∴x8+x4+1=x4（x4+1）+1
=（x2）2[（x2）2+1]+1
=（-x-1）2[（-x-1）2+1]+1
=（x2+2x+1）[（x2+2x+1）+1]+1
=（x+0）（0+x+1）+1
=（x）（x+1）+1
=x2+x+1
=0．
故