On (平均),people who don’t smoke are healthier than people who do.
第1题:
( )
A.faces
B.skin
C.bodies
D.people
第2题:
:( )
A.faces
B.skin
C.bodies
D.people
第3题:
that 25. people
第4题:
A、WHO Ⅰ级
B、WHO Ⅱ级
C、WHO Ⅲ级
D、WHO Ⅳ级
E、未纳入WHO分级
第5题:
第6题:
以下变量名不合法的是?
A.2people
B.people2
C.people_2
D._people