问题
单项选择题
黄酮类化合物大都显黄色，广泛存在于自然界，是一类重要的天然有机化合物。这类化合物多存在于双子叶植物及裸子植物中。苔类中很少含有黄酮，而藻类、微生物、细菌中没有发现黄酮类化合物存在。以下化合物不属于黄酮类化合物的是（）。
A.黄芩素
B.金丝桃苷
C.橙皮苷
D.杜鹃素
E.补骨脂素
答案
参考答案：E
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黄酮类化合物大都显黄色，广泛存在于自然界，是一类重要的天然有机化合物。这类化合物多存在于双子叶植物及裸子植物中。苔类中很少含有黄酮，而藻类、微生物、细菌中没有发现黄酮类化合物存在。以下化合物不属于黄酮类化合物的是（）。
A.黄芩素
B.金丝桃苷
C.橙皮苷
D.杜鹃素
E.补骨脂素
参考答案：E
I became lame（瘸的）in both legs in my childhood. I can’t stand 36 the support of two sticks. Only in my wheelchair can I “ 37 ”. I still remember the first day at 38 . When I appeared at the door, 39 in the classroom stared（凝视）at me in 40 . My face turned 41 . I couldn’t help 42 back. It was the 43 and sympathy（同情）in their eyes that 44 me doing so. I went shyly towards an unoccupied (空的) seat. Being lame, I didn’t dare (敢) to 45 in front of my classmates. I was afraid that I might be 46 at. In those days I was very sad to see others walking 47 . One day, a few students came up to me and asked me to go outside. I was really 48 . They encouraged me with a(n) 49 smile and 50 me in my wheelchair from place to place. I was 51 to them for giving me a chance to see the 52 of our lovely school with my own eyes. After that we often read, played and talked together. My friends are always 53 to help me. It made me 54 I am handicapped (残疾的). Once they asked me, “What is the most beautiful thing in our school?” Without hesitation (犹豫) I said, “It is the 55 . ”
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