食醋中的醋酸成分是活细胞不需要的小分子物质,蔗糖不是活细胞需要的大分子物质。用食醋和蔗糖可将新鲜的大蒜头很快地腌成糖醋蒜,其原因是(
As kids, my friends and I spent a lot of time out in the woods. “The woods” was our part-time address, destination, purpose, and excuse. If I went to a friend’s house and found him not at home,
从政治生活角度看,漫画《援助》中的国家的做法 ①是在履行组织社会主义经济建设职能 ②是在履行提供社会公共服务职能 ③是坚持对人民负责原则
用价层电子对互斥理论预测SO2和SO3的立体结构,两个结论都正确的是( ) A. 直线形;三角锥形 B. V形;三角锥
The Greens’ shop has been broken into three times in the last two years, ______ resulting in their great loss. A. each B. ever
10、治疗白化病、苯丙酮尿症等人类遗传疾病的根本途径是: A、口服化学药物 B、注射化学药物 C
22. Jack’s grandpa was ______ from the fire by his neighbors, but died soon from serious burns. A. rescued B. recovered C. resulted
2006年5月24日夜间,一辆油罐车在贝宁经济首都科托努以北500多公里的波尔加起火,事故现场发现了23具被烧焦的尸体,造成至少35人死亡,60多人受伤。