使用或储存特殊贵重的机器、仪表、仪器等设备或物品的仓库和厂房，建筑耐火等级不低于（）。
A.一级
B.二级
C.三级
D.四级
参考答案：A
在下列各句的空格内填上一个适当的完整的单词，该词的首字母已给出。
1. It's cold outside. Please put on your w________ winter coat.
2. Last year we p________ a lot of trees around our school. And now they grow well.
3. This backpack is c________ but he still can't afford it.
4. May is the f________ month of the year.
5. Don't worry about me, mom. I can take care of m________.
阳明经头痛的部位是
A．在前额部，连及目系
B．在前额部及眉棱骨处
C．在头之侧，并连及耳部
D．在巅顶部位，或连于目系
E．多在头后部，下连于项
