第2部分：阅读判断(第16～22题，每题1分，共7分)
下面的短文后列出了7个句子，请根据短文的内容对每个句子做出判断：如果该句提供的是正确信息，请选择A；如果该句提供的是错误信息，请选择B；如果该句的信息文中没有提及，请选择C。
16. The pump of the first implanted self-contained heart was made of titanium and plastic.
A. Right
B. Wrong
C. Not mentioned
17. The patient's life was expected to last several years longer by implanting the artificial heart.
A. Right
B. Wrong
C. Not mentioned
18. There is no difference in structure between the self-contained heart and the mechanical heart.
A. Right
B. Wrong
C. Not mentioned
19. The American Heart Association recommended widely using the self-contained heart.
A. Right
B. Wrong
C. Not mentioned
20. Dr. David Faxon believed that the implantable, permanent artificial heart will certainly be de-veloped in the future.
A. Right
B. Wrong
C. Not mentioned
21. Approximately two thousand one hundred patients received heart implantation in America last year.
A. Right
B. Wrong
C. Not mentioned
22. Some doctors doubt the possibility of donor hearts being replaced by artificial ones.
A. Right
B. Wrong
C. Not mentioned