The experiment proved to be satisfactory．（）
A: Right
B: Wrong
C: Not mentioned
A: Right
B: Wrong
C: Not mentioned
举一反三
- The study actually proved for the first time the benefit of stem cell therapy（） A: Right B: Wrong C: Not mentioned
- 38.It is hard to be a volunteer in a hospital. A: Right B: Wrong C: Not Mentioned
- The Soviet Union was a capitalist country. A: Right B: Wrong C: Not mentioned
- The cards that are wildly used now are credit.cards. A: Right B: Wrong C: Not mentioned
- The average life-span of Americans is 80 years. （） A: Right B: Wrong C: Not mentioned