According to the U. S. National Highway Traffic Safety Administration (NHTSA) car crashe

According to the U. S. National Highway Traffic Safety Administration (NHTSA) , car crashes are the leading cause of death among children between 5 and 14 years of age. Says NHTSA: "【61】50% of children who die in crashes are unrestrained. In addition, 4 out of 5 children are【62】restrained. "

The NHTSA offers a number of safety【63】and cautions for those who are accompanied by children while driving. 【64】laws vary from country to country and even from state to state, these guidelines may serve as food for【65】to many parents and guardians of children.

The safest place for all children is in the back seat. Infants should be placed in a rear-facing child safety seat in the baekseat of the car. A child【66】a year old and weighing at least 20 pounds may be placed in a forward-facing seat. At 40 pounds, the child can use a "booster seat(儿童案例椅) ",【67】is secured by one of the car"s lap and shoulder belts. At approximately 80 pounds and a【68】of about four feet nine inches, the child may begin using an adult safety strap.

Children should not sit in the front passenger seat【69】they are at least 13 years of age. Front- passenger air bags can cause serious【70】to younger children and babies.

When a booster seat is used, a lap belt alone will not provide【71】protection if the booster seat does not have a【72】.

Do not think that a shoulder belt alone will protect a small child; in the【73】of a crash, the belt may【74】the neck of the child, causing serious injury or even death.

Follow instructions closely when【75】and using child seats. According to NHTSA, "even the "safest" seat may not protect your child if it isn"t used correctly. "

(61)

A．Of

B．On

C．Over

D．Behind

请帮忙给出正确答案和分析，谢谢！