Error Correction
33. Mathematics(a) have taken centuries to develop(b) the methods(c) that we now use(d) in arithmetic.

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統計： A(73), B(23), C(11), D(45), E(0) #568467

詳解 (共 4 筆)

#1073297
改成數學家 mathematicians
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#840033
mathmatics當學科名稱是單數，故跟後面have 搭不起來~
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#871005


n.[U]不可數名詞

數學[J]

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#834525
求解!錯在哪呢?
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