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【简答题】

vary(v.) various(adj.) variety (n.) variable (adj.& n.) ①. Speed was a ( ) in the experiment. ②. The levels of tolerable pain ( ) greatly from individual to individual. ③.The most amazing thing about nature is its infinite ( ) . ④. The school has received ( ) grants from the education department.

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【单选题】What can we learn about the sales manager?

A.
He is having a meeting.
B.
He is in his office now.
C.
He is available next week.
D.
He is on sick leave.