题目内容
Before we can draw conclusions, we must collect enough ______ and analyze them scientifically.
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The pole vault is truly the ______ of any track and field competition.
At the end of my junior year of high school, I heard about a summer program ______ to interest girls in engineering.
It was at the exact moment he took a deep breath ______ he began to lift off the ground.
Call me, write to me, email me; ______, let’s keep in touch.
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