We discussed where to go for a whole morning, but we decided to stay at home_____. A. at the end B. by the end C. in the end D. on end
图6-9为沿河分布的四个乡村聚落，其中最有可能先发育为城市的是( ) 图6-9
You may not like her, but you have to ________ that she is good at her job. A. admit B. confirm C. obtain D. appoint
人类在预防与诊疗传染性疾病过程中，经常使用疫苗和抗体。已知某传染性疾病的病原体为RNA病毒，该病毒表面的A蛋白为主要抗原，且疾苗生产和抗体
康有为、梁启超和孙中山关于民主的论述，其主要的不同点 A．社会背景 B．根本目的 C．途径手段 D．阶级属性
－There are so many girls over there. Which one is your sister? －The one _________ hat is yellow. A．who B．whose C．that D．which
旅游区固体废弃物污染的主要来源是（ ） A．发展交通造成的垃圾 B．旅游饭店产生的垃圾 C．旅游者乱抛的垃圾 D．旅游区动植物形成的垃圾
过点
,则
的解析式是 
( )
B. 
C. 
D. 
