内蒙古海拉尔三中高一英语《第四单元》练习题

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第一部分：单项选择（共15小题；每小题1分，满分15分）从A、B、C、D四个选项中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。Though great progress has been made in astronomy in the past fifty years, ______ still much that remains mysterious to astronomers _______ the universe, even the solar system A It is; of B there is; about C It is; with D there is; with [来源:学|科|网Z|X|X|K]2 People in China ______ full freedom of religion but any religious group that is engaged ______ something illegal shall be dismissed A，大小：468 KB