Although my work is sometimes （) ,I feel I can make a difference in people’s lives.
A. functioning
B. freshening
C. freshening
D. freezing
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People （) with their fingers for most of human existence.
A. had eaten
B. are eating
C. have eaten
D. were eaten
Even the most successful businessmen sometimes （) the value of their lives and accomplishments.
A. question
B. promote
C. estimate
D. quote
He died （) before his 36th birthday.
A. shortly
B. strongly
C. shyly
D. significantly
轨道的接头般缝隙为1~2mm, 在寒冷地区冬季施工缝隙一般为（）mm
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