looked safe ---. A) though the testing results were controversial
B) so there was no need for extensive animal testing
C) as long as it was used in reasonable quantities
D) except in the case of pregnancy
E) because chemically it was similar to drugs already long in use
314- We understand from the passage that the tragic thalidomide experience ------- . A) has forced drug companies to make drug testing even more carefully
B) has turned people to support drug testing on animals
C) was only confined to Britain
D) put many well-known drug companies out of business
E) actually affected very few people
