— Will you come and play football with us?
— ____________. I have a lot of homework to do now.
A:I am afraid not
B:I don't
C:I mustn't
D:I am not
— Jack, would you like to see the new movie?
— I'd love to, but I______ it already.
下列与免疫失调无关的疾病是
目前我国自主研发的抗癌新药西达本胺即将全球上市.西达本胺由分子构成,其化学式为C22H19FN4O2,下列关于西达本胺的说法不正确的是( )