用哺乳动物的红细胞制备用细胞膜的方法正确的是（　　）

Dear Jane,

    Thank you 1 your letter. It's good that you 2 your school. I go to school 3 Monday to Friday. I have four classes in the morning 4 two classes in the afternoon. I am5 after class. On Monday and Wednesday afternoon I play volleyball for 6 hours. On Tuesday afternoon 7 of us have a singing class. And on Thursday afternoon some 8 computer class. On Friday afternoon I learn to speak English 9 my English teacher. On Saturdays and Sundays I don't go to school. I am often with 10 father and mother.

Love,

Lin Mei