A benign tumor is cancerous and more likely to grow rapidly and spread.

A) The cattle was          B) The cattles were

C) The cattle were          D) A cattle was

A、userdel zhangsan

B、userdel -e zhangsan

C、userdel -i zhagnsan

D、userdel -a zhagnsan

A、the centroid; an axis of symmetry

B、arbitrary point; an axis of symmetry

C、the centroid; an arbitrary axis

D、arbitrary point; an arbitrary axis