A. No matter what B. No matter which C. Whatever D. Whichever

5. __________ is our belief that improvements in health care will lead to a stronger, more prosperous economy.

　A. As B. That C. This D. It

6. _________ I can't understand is _________ he changed his mind.

　A. That; hat B. What; whyC. Which; how D. That; why

【答案】1. B 2. C 3. B 4. D 5. D 6. B