试题 试卷
题型：单选题 题类：常考题 难易度：普通
北京首都师大附中2019-2020学年七年级上学期英语期中考试试卷
— It's about 1.3 billion.
—For two hours.
—It's about 500 meters.
—About 5 minutes' walk.
—Twice a month.
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