问题
填空题
天然石油通常是（）到（）的，流动或半流动的粘稠液体，比重一般都小于（）。
答案
参考答案：淡黄色；黑色；1
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天然石油通常是（）到（）的，流动或半流动的粘稠液体，比重一般都小于（）。
参考答案：淡黄色；黑色；1
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| On a rainy morning, a boy and his mother 1 in a restaurant. They were waiting for 2 food. A poor man came 3 . He sat at a table 4 some leftover French fries on it. "Mommy, he's eating someone else's French fries!" "He's 5 and poor, dear," said his mother."Can we buy him a hamburger?" the boy asked."I don't think so," his mother answered,"he only 6 left overs." When the waiter 7 their food, the 8 quickly took a small part from his hamburger. Then he 9 and gave it to the poor man. The man was so 10 that he almost came to tears (泪). The boy looked at his mother with a happy smile. | ||||
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