细胞内染色体的组成是（ ）
A：DNA和无机盐
B：DNA和葡萄糖
C：水和蛋白质
D：DNA和蛋白质
____Six.
____I have computer class, PE and science.
____How many classes do you have on Wednesdays?
____Is it Wednesday today?
____What do you have in the afternoon?
____Yes, it is.
填上恰当的字组成词语。
you
____久 ____静 ____愁 ____美
