单项选择题

Atoms that (having) different atomic (numbers) generally (behave) (differently).（）

A.having
B.numbers
C.behave
D.differently

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单项选择题

The (massive) architecture of the ancient Egyptians (was advanced) than (that of) the Sumerians (苏美尔人) and even surpassed that of (later) societies.（）

A.massive
B.was advanced
C.that of
D.later

单项选择题

(There was) a (tremendous) appetite for new films for the early moving picture machines called nickelodeons, and film-makers sought (rewarded) careers (in this) new medium.（）

A.There was
B.tremendous
C.rewarded
D.in this

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