问题
单项选择题 共用题干题
维生素D在体内的代谢、调节及生物功能都非常重要，掌握维生素D的代谢，对钙、磷和骨代谢疾病的诊断和治疗有重要意义。
维生素D代谢物中半衰期最短的是（）
A.1，25-（OH）2D
B.维生素D
C.25-（OH）D
D.24，25-（OH）D
E.7-脱氢胆固醇
答案
参考答案：A
搜题请搜索小程序“爱下问搜题”
维生素D在体内的代谢、调节及生物功能都非常重要，掌握维生素D的代谢，对钙、磷和骨代谢疾病的诊断和治疗有重要意义。
维生素D代谢物中半衰期最短的是（）
A.1，25-（OH）2D
B.维生素D
C.25-（OH）D
D.24，25-（OH）D
E.7-脱氢胆固醇
参考答案：A
| 用方框内所给单词的适当形式填空。 | |
| |
| Are you the only child in the family? If so, you are the most 1 in your family. 2 are the closest people to you in the world. But a lot of middle school students have a problem. They feel they're not as 3 to their parents as before. They even think their parents are unfair to them. Some students complain that their parents say a lot to them, but never 4 to them. Some of them even say it 5 . "My parents don't allow me to play computer games, 6 other classmates are doing that". Others say, when they're 7 phone calls to friends, their parents like to ask if they're speaking to a boy or a girl. These make them very 8 . Some students even decide to leave home. But they don't know running away may bring them some more problems. Show your parents you're growing up. Then they'll feel you're no 9 a small child. 10 you follow the advice, you'll have a happy life and never think of running away. |