题干

CuSO4是一种重要的化工原料,有关制备途径及性质如图所示.下列说法错误的是(   )

A:途径①所用混酸中H2SO4与HNO3物质的量之比最好为3:2

B:相对于途径①、③,途径②更好地体现了绿色化学思想

C:生成等量的硫酸铜,三个途径中参加反应的硫酸的物质的量:①=②<③

D:利用途径②制备16g硫酸铜,被还原的硫酸的物质的量为0.1mol

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D

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Benjamin West, the father of American painting, showed his talent for art when he was only six years of age. But he did not know about brushes before a visitor told him he needed one. In those days , a brush was made from camel's hair. There were no camels nearby. Benjamin decided that cat hair would work instead. He cut some fur from the family cat to make a brush.

    The brush did not last long. Soon Benjamin needed more fur. Before long, the cat began to look ragged (蓬乱). His father said that the cat must be sick. Benjamin was forced to admit what he had been doing.

    The cat's lot was about to improve.  That year, one of Benjamin's cousins, Mr.Pennington, came to visit. He was impressed with Benjamin's drawings. When he went home, he sent Benjamin a box of paint and some brushes. He also sent six engravings (版画)by an artist. These were the first pictures and first real paint and brushes Benjamin had ever seen. In 1747,when Benjamin was nine years old,Mr.Pennington retured for another visit .He was amazed at what Benjamin had done with his gift.He asked  Benjamin's parents if he might take the boy to Philadelphia for a visit.

In the city, Mr.Pennington gave Benjamin materials for creating oil paintings.The boy began a landscape (风景) painting.Wiliams ,a well-known painter,came to see him work . Wiliams was impressed with Benjamin and gave him two classic books on painting to take home .The books were long and dull. Benjamin could read only a little,having been a poor student.But he later said,”Those two books were my companions by day,and under my pillow at night.”While it is likely that he understood very little of the books,they were his introduction to classical paintings.The nine-year-old boy decided then that he would be an artist.