某学生从网上查知:早在1993年,我国科学家已成功地制出了一种相对原子质量为18的氧原子,其原子的核外电子数为( )
A.8
B.10
C.16
D.18
答案:A
I like the Internet because I can____my friends and make a lot of new friends online. [ ]
A. sing with
B. go with
C. chat with
D. argue with
工资、薪金所得,以每月收入额减除费用800元后的余额为应纳税所得额。( )