鼻咽癌()
A.无地理分布及种族分布特点
B.在黄种人中发病率高
C.高发于青少年
D.与EB病毒有密切关系
E.与吸烟有密切关系
参考答案:B, D
下列变化过程属于氧化反应的是( )
A.HCl→H2
B.Mg→Mg2+
C.Cl-→AgCl
D.CuO→Cu
Now that there is much difficulty in finding a satisfying job,why don’t you do a _____ job to support you for the time being?
A.thorough
B.temporary
C.accurate
D.essential