亚急性联合变性的病因（）。
A.维生素B12缺乏
B.维生素B1缺乏
C.维生素B6缺乏
D.内因子缺乏
E.叶酸缺乏
参考答案：A
Write the words in correct order. 连词成句。
1. is, playing, exercise, basketball
2. how, every, often, you, go, do, to, school, week
3. have to, play, for, sports, exercise, you
4. always, my, lunch, I, make
5. works, very, Kim, hard
王羲之的书法有“飘若浮云，矫若惊龙”的美称，其行书代表作是《女史箴图》。
订正：_____________________________________________________________________________________
