单项选择题

Located in Washington, D. C. , the Library of Congress contains an imposing array of books on every conceivable subject.

A．history
B．catalog
C．shelf
D．collection
<上一题 目录 下一题>
热门 试题

单项选择题
Biologists have ascertained that specialized cells convert chemical energy into mechanical energy.
A．determined
B．argued
C．pretended
D．hypothesized
单项选择题
New England town meetings, in their most highly developed form, are assemblies of the voters.
A．protests
B．gatherings
C．responsibilities
D．liabilities
相关试题