【单选题】CIDR地址块实际可表示的地址数为()。
【单选题】His father often ______TV in the evening.
【单选题】His father often tells him _______ in that river because it’s dangerous.
【简答题】根据句意及首字母提示完成空格中所缺的单词。 1. His father often goes abroad and he can speak several foreign l_______. 2. China is one of the largest c_______ in the world. 3. My son likes eating hamburgers. He says they a...
【单选题】His father often ______ him to do what he really likes.
【单选题】Linda with his father often _________ the zoo to see the animal.
【判断题】大隐静脉起于足背静脉弓内侧端,最终汇入股静脉,主要收集足、小腿的静脉血。( )