迟发性外伤性颅内血肿常见于（）
A.3日内
B.12小时内
C.3周内
D.24小时内
E.6小时内
参考答案：A
根据句意及首字母提示，完成下列单词的拼写。
1. The park is c______ to the school.
2. It's a long d______ from Beijing to Fujian.
3. The computer is too expensive. I don't have e______ money to buy it.
4. Guangzhou is in Guangdong P______.
5. Doing chores at home all day is very d______.
下列物质中符合如图所示阴影部分表示的分类标准是（ ）
A．K2CO3
B．Na2CO3
C．NaCl
D．NaHCO3
