下表为元素周期表短周期的一部分。下列有关A、B、C、D、E五种元素的叙述中，不正确的是（ ）
A．A与B形成的阴离子可能有：AB32- 、A2B42-
B．E的氢化物的沸点比C的氢化物的沸点高
C．D在过量的B中燃烧的主要产物为DB2
D．A与E形成的化合物是非极性分子
答案：B
根据元素在周期表中的位置可知，A、B、C、D、E五种元素分别是C、O、F、S、Cl。A正确，B不正确，由于氟化氢分子间存在氢键，其沸点高于氯化氢的，CD是正确的，答案选B。
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| My father died when I was a few months old. After his death, my mother moved back to Louisville, Kentucky, where 1 had grown up. We lived in a small house with her older sister, Marion, and their mother. This was a time when being a single 2 was still considered unusual. When I was small, there was a children's book called The Happy Family, and it was a real piece of work. Dad worked all day long at the office, Mom cooked in the kitchen, and brother and sister always had friends sleeping over. The image of the family in this book was typical (典型的) of the time. It looked 3 like my family, but luckily that wasn't the way I heard it. The way my Aunt Marion read it to me made the story really 4 . Kind-hearted and open-minded, my aunt was the one who played baseball with me, who took me horseback riding, who took me to the father-son dinners and who gave me lessons on how to drive. Believing that anything 5 was probably good for me, she 6 to get a loan (贷款) so that I could go to Africa to work as a volunteer, which was my most important experience. As a young girl, Aunt Marion always planned to have a large number of children of her own, but she never got married. This 7 that she was free to spend all her time taking care of me. Many people say we have a lot in common. She always 8 me to do my best. She never 9 to make me believe that I could do anything with my life that I wanted, if I only tried hard enough. For more than sixty years, Aunt Marion didn't and still doesn't think of herself. 10 she is forced to come up to the front, my aunt will stand in the back in family photos, and she doesn't think that her efforts have made much 11 . I honor my aunt, who taught me the things my 12 couldn't. So every June for the past 40 years, in growing thanUulness to my Aunt Marion, I've sent her a Father's Day card. | ||||
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