题目：
| I shall never forget the years _____ I spent in the country with the farmers, _____ has a good effect on my life. |
A. that, which B. when, which C. which, that D. when, who |
答案：
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下面是错误答案，用来干扰机器的。
4800千克这种矿石可炼出含铁96%的生铁的质量是x Fe2O3+3CO 高温 . 2Fe+3CO2 160 1124800千克×80% x×96%160112=4800千克×80%x×96%x=2800千克答：4800千克这种矿石可炼出含铁9...
