问题
单项选择题
关于寰枢关节叙述正确的是（）
A.可使头部做前俯、后仰和侧屈运动
B.两侧关节间隙常不对称
C.可使头部做旋转运动
D.属于联合关节
E.由寰椎两侧的下关节面与枢椎的上关节面构成
答案
参考答案：C
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关于寰枢关节叙述正确的是（）
A.可使头部做前俯、后仰和侧屈运动
B.两侧关节间隙常不对称
C.可使头部做旋转运动
D.属于联合关节
E.由寰椎两侧的下关节面与枢椎的上关节面构成
参考答案：C
请阅读下面短文，掌握其大意，然后从36—55各题所给的A、B、C、D四个选项中，选出可以填入空白处的最佳选项。 Peer pressure can be a powerful force, and sometimes a positive one. For example, hanging out with active peers may lead kids to more, making a child’s social network a vehicle for promoting healthy habits and obesity unconsciously. The scientists studied networks of a group of students aged 5 to 12 and how the youngsters’ made and dropped friends, and effect these changing relationships had on their physical activity level. In fact, children their exercise level little by little to better those in their circle; children who with more active students were more to increase their physical activity levels, those who befriended more sedentary(久坐不动的) children became active. The children were mirroring, following or adjusting to be to their friends before they knew it. The encouraging suggest a potentially effective way to change children’s behavior. relying only on organized exercise programs to get moving, perhaps introducing sedentary kids to more active ones — might help more kids the couch. It’s believed that this is a possible novel approach to obesity . The social environment does carry more power than we have given it for, so we should make use of that intentionally to influence kids. that children are increasingly connected to one another, through face-to-face interactions or virtual ones, their networks can clearly have a deep effect many aspects of their behavior-help kids in the long run by turning them into healthier adults.
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