下列与砷致病机理有关的基因是()。
A.p53
B.bcl-2
C.bax
D.TGF-β
E.C-cym
参考答案:D
I _________ Lucy to be careful with her handwriting all the time, but she hasn’t polished it at all.
A.told
B.have been telling
C.will be telling
D.have told
我们将在明天下午举行班会。