题目内容

17.The gas explosion was really__________.

A. frightened
B. frightening
C. fright
D. fighting

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18.Edison__________the electric bulbs over one hundred years ago.

A. found
B. discovered
C. thought
D. invented

19.Taste and__________are closely connected.

A. smell
B. legs
C. mouth
D. hearing

20.At first you must__________yourself, and then you can comfort others.

A. control
B. limit
C. restrict
D. confine

21.You’d better__________the dull parts of the novel.

A. skirt
B. jump
C. leap
D. skip

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