题目

如图是甲、乙两种固体物质的溶解度曲线。下列说法错误的是（ ）A. T℃时，甲、乙两物质的溶解度相等B. 乙的饱和溶液降温时，可变为不饱和溶液C. 甲中混有少量乙，可采用降温结晶的方法提纯甲D. T℃时，甲的饱和溶液溶质质量分数为20% 答案：【答案】D【解析】A、T℃时，甲、乙两物质的溶解度相等正确，因为该温度下有交点，正确但不符合题意，故选项错误；B、乙的饱和溶液降温时，可变为不饱和溶液正确，因为乙的溶解度随温度的升高而减少，正确但不符合题意，故选项错误；C、甲中混有少量乙，可采用降温结晶的方法提纯甲正确，Today we tell about Louisa May Alcott. She wrote one of America’s best loved children’s books. In 1868, an American publisher asked Louisa May Alcott to write a book for girls. At first, she was not sure if she wanted to do it. She said she didn’t like girls. However, she decided to write the book finally. She told about her experiences growing up in the northeast of the United States. The book was quite interesting. Little Women became one of the most popular children’s books in American literature. It was published (出版）in more than 50 languages. Alcott was born in Pennsylvania in 1832. The Alcotts did not have much money. She tried teaching, sewing(缝纫) and taking care of children. She did not like any of these jobs. At the age of 16, she wrote her first book, Flower Fables. Her stories were exciting, but unreal. She sold them to newspapers and magazines for money. The first volume (卷) of Little Women came out in 1868. It made Alcott famous and get a lot of money. She continued writing other popular books for young people. These books included An Old-Fashioned Girl, Little Men and Eight Cousins. Alcott wrote many exciting stories about love. But she was single (独身的) all her life. She continued to help her family during the last years of her life. 1.Alcott grew up in the ______ of the US. A. southeast        B. northwest        C. northeast         D. southwest 2.“One of America’s best loved children’s books” refers to (指的是) the book____. A. Little Women              B. Flower Fables   C. An Old-Fashioned Girl      D. Eight Cousins 3.The first paragraph tells us that the article is about ______.    A. a famous children’s book    B. a famous writer    C. how a book came out         D. why a book is so loved 4.Alcott wrote her first book in ______.  A. 1832  B. 1848  C. 1850  D. 1868 5.From the article, we can learn ______.    A. Alcott was born into a rich family B. Alcott had a happy childhood  C. Alcott didn’t live with her family D. Alcott never married all her life