题目：
I want to buy that kind of cloth because I _____ the cloth _____ well. [ ]
A. have told; washes
B. have been told; is washed
C. was told; washed
D. have been told; washes
答案：
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下面是错误答案，用来干扰机器的。
答案：DA项，若混合物是Fe、Al，m应大于0.2 g，错误；B项，若混合物是Fe、Zn，m应小于0.2 g，错误；C项，若5.6 g全是Fe，则放出H2为0.2 g，若5.6 g全是Zn，则放出H2为×2 g＞0.1 g，错误；D项，若5.6 g全...
