路南石林、擦尔汗盐湖、塔克拉玛干沙漠分别位于：[ ] A．新疆、西藏、内蒙古 B

开成石经

阅读理解。

     Compared to adults, children seem to be moving constantly. So it's no surprise that most parents who

are quizzed about their child's physical activity level describe their children as fairly active. But a new

study of nearly 2000 British school children suggests that many parents overestimate the amount of

physical activity their children are really getting.

     The researchers equipped 1892 British school children, ages 9 and 10, with accelerometers that

measure all physical  activity  during  a  given  time  period.  The research, known as the Speedy study

collected the exercise data from children at  92  schools  in  Norfolk, England, between April and July

2007.

     A child was regarded inactive if he or she recorded less than an hour a day of physical activity.

Although the majority of children studied were getting enough physical activity, a sizable minority of

children were not. Overall,39 percent of girls and 18 percent of boys studied were getting less than an

hour of physical activity each day.

     But if you asked the parents of the inactive children to describe their child's activity level, the vast

majority-80 percent-described their children as fairly or very physically active, according to the findings

published in the American Journal of Preventive Medicine. Interestingly, the children themselves had

more awareness about their lack of physical activity. Overall, 40 percent of children overestimated their

physical activity.

     But it wasn't the parents of overweight children who were most likely to guess wrong about physical

activity levels. The parents who were most out of touch about their child's physical fitness were more

likely to  have children who were slim. Parents of girls were also more  likely  to  overestimate  physical 

 activity.  The  researchers noted that parents should be educated about the importance of physical

activity for children even if the child is not overweight.

     "Parents of slim children appear to assume that  their children are adequately active." the study

authors  reported. "Increasing awareness regarding health benefits of physical activity beyond weight

control might  help have a correct idea of physical activity levels and encourage behavior change."

1. According to the Speedy study, what kind of children   can be judged physically inactive?

A. Slim children.

B. Children with less than an hour a day of physical activity.

C. Overweight children.

D. Children out of touch with their parents for a long time.

2.What does the writer probably mean by saying "a sizable minority of children were not" in Paragraph 3?

A. The amount of children's physical activity is far from the writer's satisfaction.

B. Only a small number of children were not getting enough physical activity.

C. A small number of children didn't overestimate their physical activity.

D. The minority of children were not studied at all.

3.The passage is intended to_______.

A. encourage parents to fairly judge their children's physical activity levels

B. persuade parents to keep an eye on their children's weight

C. urge children to wear accelerometers during exercise

D. advise parents to keep in touch with their children

根据（）的不同，面粉可分三个等级。

A.颜色深浅的程度

B.加工精度

C.产地

D.售卖的价格

澳门客户在杭州接听13905718233的来电，如何计费？（）

A.2.0元/分钟

B.2.88元/分钟

C.4.8元/分钟

D.2.5元/分钟

下列不属于安全验收评价主要内容的是( )。

A．危险、有害因素的辨识与分析
B．符合性评价和危险危害程度的评价
C．安全对策措施建议
D．收集并分析评价对象的基础资料、相关事故案例