A:looked through
B:read through
C:pulled through
D:got through
He bought a new phone last week. It c____ him 4,000 yuan .
下列说法不正确的是( )
下列词语中,没有错别字的一组是( )
以直角坐标系xOy的原点为极点,x轴的非负半轴为极轴建立极坐标系,且两坐标系相同的长度单位.已知点N的极坐标为( 2 , π4 ),M是曲线C1:ρ=1上任意一点,点G满足 OG→=OM→+ON→ ,设点G的轨迹为曲线C2.