[单项选择]Nylon was ___the human-made fibers.
A. the first of which
B. what the first of
C. it the first of
D. the first of

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[单项选择]The introduction of fabrics made from rayon, nylon and other ______ fibers has made many changes in our civilization.
A. manufactured
B. artificial
C. synthetic
D. manned

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[单项选择]Nylon (is made) (of air), coal (and) (water).
A. is made
B. of air
C. and
D. water

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[单项选择]Nylon was ___the human-made fibers. A. the first of whichB. what the first ofC. it the first ofD. the first of

更多"Nylon was ___the human-made fibers."的相关试题:

[单项选择]Nylon was ___the human-made fibers.
A. the first of which
B. what the first of
C. it the first of
D. the first of