单项选择题

ATOMS: CRYSTAL::

A． substance : air
B． water : density
C． level: ramification
D． numbers : matrix
E． agents : reaction

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单项选择题

Because many of the blacklists in the communications and entertainment industries were secret, the number of playwrights, script writers, novelists, and journalists who were______to stop writing permanently is______.

A． happy… astounding
B． forced… unknown
C． unafraid … impressive
D． inclined… unsurprising
E． remiss … inconceivable

单项选择题

A． skin : whale
B． shell: mollusk
C． pincer : crab
D． egg : bird
E． web : seal

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