D
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Einstein’snewtheoryonopticschanged__________scientificideaaboutlight.
Theresearchprojecthasonlybeenunderwayforthreemonths,soit’toosearlyto_______itssuccess.
视力;洞察力 n. v_______________
All citizens in this nation are__________ to the law.
按顾客要求制做v.c_______________