California State Law requires that all bicycle riders under age 18 wear prot

游客2023-07-25 38

问题 California State Law requires that all bicycle riders under age 18 wear protective helmets whenever they ride on public streets or trails．Medical research shows that 85% of【B1】______brain injuries can be【B2】______by wearing a bicycle helmet．About 1000 bicycle riders are killed in the U.S.every year，usually in【B3】______with cars，and 75% of them die of head injuries．Many thousands more suffer less severe but still debilitating injuries which are【B4】______than simple road rash and broken bones．Children can suffer permanent personality changes and learning【B5】______from a brain injury．Common long term【B6】______includes concentration difficulties，aggressiveness，headaches and balance problems．【B7】______your great pain if this happens and you have to blame it on your【B8】______to buy a helmet!
There are many good helmets off the market．You can make your choice based on three criteria：【B9】______．
A helmet that doesn’t fit，doesn’t sit correctly on your child’s head，not only looks silly but is less than useless．A good reason to purchase the helmet from a bike store is the fact that【B10】______．You shouldn’t expect the sales to help at a discount or department store to correctly perform the service．Some helmets look better than others．【B11】______． [br] 【B2】

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答案 prevented

解析空前的系动词be和空后的介词by提示所填的词应为动词的被动式。由上文的California State Law requires that all bicycle riders under age 18 wear protective helmet这句话推测，政府的法令目的当然是为了保护未成年的骑自行车者，此处可能要表达的是佩戴头盔可以防止头部受伤。prevent意为“防止”。

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