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【单选题】
为了比较各国家,各地区龋齿情况,WH0规定的龋齿患病水平衡量标准是A.
12岁儿童的患龋率
B.
15岁儿童的患龋率
C.
12岁儿童的龋均
D.
15岁儿童的龋均
E.
学龄儿童的龋病发病率
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【多选题】学好汉字的基本要求有哪些?
A.
汉语拼音基础知识
B.
汉字基本笔画知识及其正确书写
C.
汉字书写的笔顺规则
D.
汉字结构的知识：笔画、部件、整字、字的结构种类
E.
汉字文化知识
【单选题】The old scientist decided to move to his core, try home ______ his advanced age and poor health.
A.
in the interest of
B.
as a result of
C.
on account of
D.
in support of
【简答题】III 、阅读理解 London Thursday July 26 (Reuters)---Ian Johnstone missed his girlfriend so much that he flew back to Britain from Australia to propose to her(向……求婚). The problem is that she flew in the oppo...
【单选题】Poor Ian______ his house. He ’ll move to thehouse in the country tomorrow afternoon.
A.
sold
B.
will sell
C.
sells
D.
has sold
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