In _______ 1960s, ________ number of habitants here is very _______ ,and it was since the middle of 1970s that the population has been increasing rapidly.

A．不填; the; much

B．the; the; small

C．不填; the; large

D．the; a; small

医学伦理学作为一门独立的学科首先产生于（）

A.英国

B.法国

C.意大利

D.美国

E.中国