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【单选题】
云南昆明滇池生长大量水葫芦的现象,表明水质正在恶化,其根本原因是A.
含有氮、磷等生活污水大量排入。
B.
水域面积减少。
C.
外来物种侵入。
D.
人为种植增加。
E.
工业废水污染。
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举一反三
【单选题】They stood gazing at the happy ______ of children playing in the park.
A.
perspective
B.
view
C.
landscape
D.
scene
【简答题】They stood gazing at the happy ________ of children playing in the park. A) perspective B) view C) landscape D) scene
【简答题】输入一个字符,判别它是否大写字母,如果是,将它转换成小写字母;如果不是,不转换。然后输出最后得到的字符。
【单选题】I disagreed fundamentally with what the sign ______.
A.
stood by
B.
stood out
C.
stood up
D.
stood for
【简答题】请简述交通小区的划分原则。
【简答题】Two children stood outside the door with old coats. “Any old papers, Lady?” asked one of them. I was busy. I wanted to say no, but I saw that their shoes were broken and wet. “Come in and I’ll make yo...
【简答题】status quo
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