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| 文章出处：学生大考试站 发布时间：2005-10-12 |
STRUCTURE AND WRITTEN EXPRESSION
l. Helium is _____all gases to liquefy and is impossible to solidify at normal air pressure.
(A) more than difficult
(B) the most difficult of
(C) more difficult of
(D) most difficult
2. Every year Canadian ______ about 75 percent of their exports to the United States.
(A) businesses that sell
(B) selling businesses
(C) businesses sell
(D) that sell to businesses
3. An innovator, ballerina Augusta Maywood was _____ a traveling company.
(A) to form the first
(B) the first to form
(C) who formed the first
(D) forming the first
4. When water freezes in the cracks of rock, ___ expands, causing the rocks to break
apart.
(A) it
(B) but
(C) then
(D) and
5. With x-ray microscopes scientists can see through live insects ___ even through
solid pieces of metal.
(A) however
(B) nevertheless
(C) or
(D) yet
6. Dennis Chavez of New Mexico ____ to the House or Representatives in l930
and to the Senate in 1918.
(A) when elected
(B) elected
(C) who was elected
(D) was elected
7. ____ are not leached out of soil, reclamation procedures are needed to restore &n
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