编制寿命表时只需要掌握当地的（）。
A.年龄别人口数
B.年龄别死亡率
C.不同性别的年龄别死亡率
D.年龄别死亡数
E.出生数
参考答案：C
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________.
温度平流对气旋发生发展及移动有什么影响？
