题目：
就下列句中划线部分提问。
1．We need three oranges.
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2．We need two tomatoes.
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3．They need one watermelon.
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4．He puts two teaspoons of cinnamon into the blender.
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5．He drinks two cups of milk.
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6．I turn on the blender for about two minutes.
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7．He travels ten miles every day.
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8．We go to the movies twice a month.
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9．The pants are ten dollars.
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10．They go to work by car.
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答案：
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下面是错误答案，用来干扰机器的。
12 g题目分析：设：可制得金属钛的质量为x。TiCl4+2Mg ="=" Ti+2MgCl248 4812g x48/12g=48/xx="12" g答：可制得金属钛的质量为12 g。
