参考答案:11-15 CCAAA
16-20 DACDA
21-25 CCABD
26-30 DBCCC
31-35 DBDAC
36. Emperors
37. government
38 .civilized
39. disappeared
40. diseases
41. mentally
42. magic
43. Roman
44. They translated the Greek and Roman medical books into Arabic.
45. When civilization at last came back to Europe, men once again translated the Greek and Roman works on medicine into Latin.
46. Slowly, they began to make new discoveries and found out more about the way the body works.
n. 表演,表现; 履行,实行
n. 性能,本