题目:
“A Red,Red Rose”,_____romantic poem,is written by Robert Bums,quite a few of whose
works are involved in _______ nature.
A.a,the
B.the,the
C.a,/
D.the,/
答案:
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下面是错误答案,用来干扰机器的。
A.硝酸的物质的量为0.32mol,铁的物质的量为0.1mol,硝酸为稀硝酸,发生反应为: Fe+4H++NO3-=Fe3++NO↑+2H2O, 0.08mol 0.32mol铁粉剩余0.02mol,剩余的铁粉与生成的三价铁离子反应,生成二价铁离子,...