[填空题]Considering their vast numbers in the seventeenth century，not much sheep are raised in Spain today（）.

[单项选择]We all collect books in vast numbers, often ______ for years.
A. left them not to read
B. leaving them unread
C. left them to be unread
D. leaving them being unread

[单项选择]Pocahonta, a seventeenth century Powhatan Indian, went to the Jamestown colony as her father's emissary.（）
A. ward
B. attendant
C. messenger
D. translator

[单项选择]

Passage 5
In the seventeenth century, European soldiers who came across some Indian groups in the western Great Lakes found that several native tribes were living in the area without a formal leadership system. They appeared to be "quite friendly with each other without a formal authority!"
Not only did the Indians appear to lack a formal system of authority, but they also deeply hated any efforts to control their actions. All members of the tribes knew what was required of them by life long familiarity with the tasks of the area. These tasks tended to be simple, since the Indian’ s rate of social change was slow. Thus, although subgroups such as soldiers had recognized leaders, no real authority was required. Rather than giving direct orders (which were considered rough), members of the tribes would a- rouse others to action by examples.
It would be difficult, if not impossible, to carry out such a system in our own society. Most of
A. a recognized authority
B. enough money
C. examples
D. changes

[单项选择]The seventeenth century was one (which) many significant (advances) (were made) (in both) science and philosophy.
A. which
B. advances
C. were made
D. in both

[单项选择]MATRIX: NUMBERS
A. gas: molecules
B. insurance: securities
C. crystal: atoms
D. base: athletics

[单项选择]The seventeenth century was one (in that) (many significant advances) (were made in) (both) science and philosophy.
A. in that
B. many significant advances
C. were made in
D. both

[单项选择](The seventeenth) century was one (which) many significant (advances) (were made) in both science and philosophy.
A. The seventeenth
B. which
C. advances
D. were made

[单项选择]The military authorities are seriously considering abandoning the expensive______plane.
A. three million dollars
B. three millions of dollars
C. three-million-dollar
D. three million-dollar