属于嘌呤类抗肿瘤药物的是().
A.卡莫司汀
B.巯嘌呤
C.卡莫氟
D.吉西他滨
E.甲氨蝶呤
参考答案:B
The old couple don't want to _______ their son and still live in the countryside although their son urged them to move to the city and live with his family several times.
A.bother
B.disturb
C.interrupt
D.dislike
“建国君民,教学为先”,这句话反映了( )的关系。
A.教育与政治 B.教育与文化C.教育与科技 D.教育与经济