下列哪项为中国儿童头颈部皮肤面积的正确计算公式()。
A.9-(12+年龄)
B.9+(12-年龄)
C.12-(9-年龄)
D.12+(9+年龄)
E.9+(9-年龄)
参考答案:B
64KB=()BYTE。
用所学单词完成下列句子。
1. We should ______ difficulty correctly (正确地).
2. Beijing is s in the ______ of China.
3. Good ______ is half done.
4. Japan is ______ the east of China.
5. Qinshihuang was the first ______ of China.