| 1. | She grounded her pupils well in arithmetic .
她给自己的学生打下良好的算术基础。
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| 2. | An arithmetic or an algebraic identity is an equation .
算数或代数恒等式是方程。
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| 3. | Subsistence only increases in an arithmetic ratio .
生活资料只能按算术级数增长。
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| 4. | He has a knack of teaching arithmetic .
他教算术有诀窍。
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| 5. | One should therefore take the arithmetic mean as the sum .
必须取算术平均作为和。
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| 6. | I am good at history but not so hot at arithmetic .
我的历史成绩不错，但算术不太好。
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| 7. | That school puts particular emphasis on arithmetic and reading .
那所学校侧重算术和阅读。
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| 8. | Education is not the chips of arithmetic and grammar .
教育不是有关算术和语法的零星知识。
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| 9. | I challenge your arithmetic .
你的算法靠不住。
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| 10. | He is good at arithmetic .
他擅长算术。
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