31.Inflation has made many Americans reevaluate their assumptions about the future; they still expect to live better than their parents have, but not so well as they once thought they could.
(A) they still expect to live better than their parents have
(B) they still expect to live better than their parents did
(C) they still expect to live better than their parents had
(D) still expecting to live better than their parents had
(E) still expecting to live better than did their parents
the key:B
比较考点：do的用法
32.Inuits of the Bering Sea were in isolation from contact with Europeans longer than Aleuts or Inuits of the North Pacific and northern Alaska.
(A) in isolation from contact with Europeans longer than
(B) isolated from contact with Europeans longer than
(C) in isolation from contact with Europeans longer than were
(D) isolated from contact with Europeans longer than were
(E) in isolation and without contacts with Europeans longer than
the key:D
比较考点：比较对象 Inuits of the Bering Sea were——Aleuts or Inuits of the North Pacific and northern Alaska were
