异烟肼:
A.肝脏毒性B.对动物有致畸作用C.二者均有D.二者均无
参考答案:A
I’m terribly sorry to have kept you waiting so long, but it’ll still be some time _________ Tony gets back.
A.after
B.since
C.till
D.before
除日照外,其余项目均以北京时20时为日界。()