1. Dynamite is ordinarily detonated _____ called a blasting cap.
A. a device is used
B. that a device
[C.] with a device
D. the use of a device
2. __________ 1900 there were some 300 bicycle factories in the United States, and they produced over a million bicycles.
[A.] In
B. Because in
C. It was in
D. That in
3. A thick layer of fat called blubber keeps whales warm even ______ coldest water.
A. although the
[B.] in the
C. the
D. of the
4. _______________ the United States, the general movement of air masses is from west to east.
[A.] Across
B. To cross
C. They cross
D. It's across
5. The bark of a tree thickens__________.
A. with age
B. it gets older
C. as older
[D.] by age
6. A substance that is harmless to a person who has no allergies can cause mild to serious reactions in a person____________allergies.
A. has
[B.] which having
C. can have
D. with
7. In 1886 a number of national unions formed the American Federation of Labor ____________.
A. Samuel Gompers was its leader
[B.] under the leadership of Samuel Gompers
C. which, under Samuel Gompers' leadership
D. Samuel Gompers led it
8. ______________ charming shops and restaurants, Old Town is the most picturesque section of Albuquerque.
[A.] With its
B. Its
C. Because its
D. For its
9. One of the oldest large suspension bridges still _________ today is the George Washington Bridge between ~ewYork City and Fort Lee, New Jersey.
[A.] uses
B. is used
C. the use of
D. in use
10. __________ seed of a flowering plant is covered by a dense protective coat.
A. On each
[B.] Each
C. Each of
D. That each
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