【参考答案】
Section A
11.B 12.D 13.B 14.A 15.D
16.A 17.C 18.A 19.B 20.A
21.C 22.C 23.A 24.D 25.A
Section B
Passage One: 26.A 27.B 28.A
Passage Two: 29.C 30.A 31.B
Passage Three: 32.B 33.D 34.D 35.D
Section C
36.depression
37.drought
38.unemployment
39.involvement
40.number
41.severe
42.characterized
43.destructive
44.The intensity and frequency of the events discouraged development and contributed to persistent poverty in the valley
45.This organization used its authority to transform the River into one of the most highly regulated rivers in the world within about two decades
46.The NIRA authorized the creation of the Public Works Administration to create jobs while undertaking work of benefit to the community