问题
选择题
已知两圆半径分别为7，3，圆心距为4，则这两圆的位置关系为[ ]
A.外离
B.内切
C.相交
D.内含
答案
答案：B
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已知两圆半径分别为7，3，圆心距为4，则这两圆的位置关系为[ ]
A.外离
B.内切
C.相交
D.内含
答案：B
Every school has its own rules. In some schools in America, students __1__ chew gum(口香糖). Some schools in Britain don’t let their __2__ have strange hairstyles. However, one __3__ is very popular around the world: students __4__ to wear uniforms on schooldays, but many students don’t like to wear the school uniforms. They think the uniforms are the ugliest __5__ in the world, but schools don’t let their students wear __6__ own clothes at school. Some students draw cartoons or some famous singers on their __7__. They think it is very __8__ that everyone wears the same clothes. What do you think ___9__ it? Do you __10__ your school uniform?
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