下列说法中没有错误的是 [] A．14C16O和12C18O两个分子所含质子数、

Ann is a middle school student. She has a sister   1  a brother. They are Helen and Paul. Ann and Helen can   2 . Ann can sing and play   3   well, but Helen   4 . Helen doesn’t like playing the instruments（乐器）. She   5   chess, but she doesn’t play chess   6  Ann. Ann can’t play chess. Helen often plays with Paul, because Paul plays   7  very well. Paul can   8  play basketball well. And he is   9  the school basketball club. He often   10  other students with basketball.

小题1:	A．or B．but C．so D．and

小题2:	A．speak B．show C．dance D．plays chess

小题3:	A．the guitar B．guitars C．guitar D．a guitar

小题4:	A．can B．doesn't C．don't D．can't

小题5:	A．has B．does C．likes D．can

小题6:	A．with B．for C．on D．and

小题7:	A．basketball B．chess C．games D．the violin

小题8:	A．also B．too C．only D．either

小题9:	A．of B．to C．in D．on

小题10:

A．plays B．joins C．teach D．Helps