已知z1=2+i,z2=1+2i,则复数z=z2-z1对应的点在第几象限[ ]
A.第一象限
B.第二象限
C.第三象限
D.第四象限
答案:B
小题1:The boy fell off the bike yesterday, but _______(幸运的是), he didn’t hurt(伤) himself at all.
小题2:Everybody _______(欢呼)when the pop star arrived
小题3:Did you enjoy _________(你) , children?
小题4:Tom often _________(想念)life in the country.
小题5:You shouldn’t buy the ___________(最新的)fashion.
小题6:The_______(可爱的)girl is my little sister.
小题7:Have you _______ (听)of this story?
小题8:After working for hours,I felt very_______(累的).
小题9:Carrots are good for your ________(健康).
小题10:Go _____(穿过) the bridge, you can see the library.
contracting states