单项选择题

Though he spent much time on the last maths problem，yet he still couldn’t__________it．
A.solve
B.count
C.reflect
D.determine

A.A.solve
B.count
C.reflect
D.determine
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单项选择题
Einstein’s__________of relativity explains the motion of moving objects．A.ideaB.conceptC.theoryD.thiriking
A.A.idea
B.concept
C.theory
D.thiriking
单项选择题
My calculation was wrong because I__________ One tiny point．A.overlookedB.ignoredC.seepedD.leaked
A.A.overlooked
B.ignored
C.seeped
D.leaked
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