Though ________ to see us, the professor gave us a warm welcome. A.surprising B.was surprised C.surprised
阅读下面的文字,完成5~7题。 两汉经学 经学的真正确立是在汉武帝时代。汉武帝接受董仲舒“独尊儒术”的建议,设置五经博士,收博士弟子五十人。
Timetables are important. They help you know what your classes are and when your classes are. They help you get to your classes on time. A class timetable has the names and time of all classes. A g
从氢、碳、氧、钙四种元素中选择适当的元素组成下列物质,写出它们的化学式: (1)酸 ;(2)碱 ;(3)盐 ;
下列关于cDNA文库和基因组文库的说法中,不正确的是( )A.cDNA文库中只含有某种生物的部分基因,基因组文库中含有某种生物的全部基因B.如果
西班牙的瑞奥汀河是一条酸河,河水中含有硫酸和硫酸亚铁.经调查发现,酸河形成的原因是由于上游河床含有的某种物质R在水中氧的作用下发生反应
I need to ______ the cake for my daughter. She is too young to eat by herself now. A. cut up B. come up C. put up D. turn u
向一定质量的铜锌合金中加入足量的稀盐酸,与反应有关的变化关系用下列示意图表示,其中正确的是( ) A. B. C. D.