—I rang you at about three yesterday afternoon, but there was no reply． —Oh, that was probably _____ I was seeing the doctor． A．when B．why
下列关于稀有气体的叙述，错误的是（ ） A． 稀有气体都是没有颜色、没有气味的气体 B． 稀有气体在空气中所占的体积约为0.03% C． 稀
下列有关稳态的叙述中，正确的是( ) A．稳态主要是机体通过各个器官、系统的协调活动来维持的 B．稳态是机体在神经系统的调节下，通过各个器官、
Jane Austen was born in Steventon, England, in 1775, where she lived for the first twenty-five years of her life. Her father, George Austen, taught her largely at home. She began to write w
The famous director of a big and expensive movie planned to film a beautiful sunset over the ocean, so that the audiences could see his hero and heroine in front of it at the end of the film as they s
阅读下面一首宋词，然后回答问题。（7分） 采桑子 欧阳修轻舟短棹西湖好，绿水逶迤，芳草长堤，隐隐笙歌处处随。
目前，在大大小小的城镇饭店里，为了减少疾病的传染机会，人们都使用随手一扔的一次性卫生筷。有关专家指出，这随手一扔的不是一双双木筷，而
The factory_____we'll visit next week is not far from here. A. where B. to which C. which D. in which
