曲线$y=e^x$在点$\left(2,e^2\right)$处的切线与坐标轴所围三角形的面积为（　 　）

完形填空

     I have a happy family. Look! Here is a 1 of my family. The boy in bed is2. I am 3 English boy. My4 is Peter. I am eleven years old. This is my sister. Her name is Kate. 5 is nine years old now. Kate and I are students now. We are 6 the same school. 7 are my father and mother. My father is a teacher. How old is my father? He is forty. My mother is 8 nice. She cooks(做饭) for us every9. We all 10 her so much. We are a happy family.

人的体细胞内含有____染色体，生殖细胞内含有____染色体．