我国职业肿瘤名单中,苯可引起哪种肿瘤()
A.急性粒细胞型白血病
B.肺癌
C.砷
D.芳香胺类
E.肝癌
参考答案:A
Our daughter doesn’t know what to ______ at the university; she can’t make up her mind about her future.
A.take in
B.take over
C.take up
D.take on
有如下程序: * * *主程序:P.prg* * * * * *子程序:P1.prg* * * SET TALK OFF X2=X2+1 STORE 2 TO X1,X2,X3 DO P2 X1=Xl+1 X1:Xl+1 DO PI RETURN xl+x2+x3 * * *子程序:P2.prg* * * RETURN x3=x3+l SET TALK ON RETURN TO MASTER 执行命令DOP后,屏幕显示的结果为( )。
A.3
B.4
C.9
D.10