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【多选题】
借助射电望远镜，天文学家在20世纪60年代获得的重大发现为（）。A.
类星体
B.
宇宙微波背景辐射
C.
脉冲星
D.
星际空间的有机分子
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举一反三
【简答题】听下面一段材料，回答第1至3题。 1. Where would the man prefer to live? [ ] A. Near the university. B. Near the train station. C. Nowhere in the city. 2. How many apartments is the man interested in? [ ] A. 2...
【单选题】已知男性的钩虫感染率高于女性。欲比较甲、乙两乡居民的钩虫总感染率,但甲乡人口女多于男,而乙乡男多于女,适当的比较方法是?
A.
分性别进行比较
B.
两个率比较的卡方检验
C.
不具可比性，不能比较
D.
对性别进行标准化后再比较
E.
做两个总率差别的假设检验
【简答题】听小对话，回答问题。 1. What would the man like for breakfast? A. Rice. B. Bread. C. Cakes. 2. Whose coat is this? A. Kate's. B. Li Lei's. C. Jim's. 3. How will they go there? A. By bike. B. By bus. C. On foot....
【单选题】How would the man get to the Snake Bar?
A.
He would take the City Line to get there.
B.
He would take the City Line for two stops and then walk two blocks.
C.
He would take a bus and get off after two stops.
D.
He would walk two blocks.
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