A、(-2,1,1)
B、<img src="https://static.tiw.cn//s/tiw/p3/UpLoadImage/2013-05-07/a6d077ee-afee-4598-92a8-19705ead3bfb.png" width="83" height="51">
C、<img src="https://static.tiw.cn//s/tiw/p3/UpLoadImage/2013-05-07/4cf57dfd-c8d5-40d2-bfa6-01b87559effb.png" width="91" height="51">
D、<img src="https://static.tiw.cn//s/tiw/p3/UpLoadImage/2013-05-07/9bc0ec72-40c4-460e-bff3-f79c8db10c1d.png" width="99" height="80">