In August 1977, a satellite to gather data about the 10 million black holes which are thought to be in the Milky Way.
B
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We_____knowledge from our families,schools,jobs,and the mass media
Decisionmakersmusthavesomewayofdeterminingofseveralalternativesisbest.（）
I'dliketoremindyouthatthereisno_____onthepartofsuspectstoanswerquestions.
A person is lucky if his career ________with his interest and hobby