Mice are used in lab tests all over the world. But why should they suffer this pain? In the United S

B. letting more people know the facts about lab mice
C. supporting companies that test on animals except mice
D. asking the local labs to think twice before testing on mice
12. By writing this article, the author mainly wanted to_________.
A. explain why labs around the world used mice in experiments
B. introduce his experiences of saving mice from painful experiments
C. tell people that mice had played an important role in scientific development
D. encourage people to do something to protect lab mice

答案  9-12 DBCD