【单选题】国家间收入水平存在差距的基本原因在于_______。
【判断题】因为有的地方没有扶手,大人孩子上山、下山时都不太安全
【单选题】When they had finished playing, the children were made to ______ all the toys that they had taken out.
【简答题】砌墙砖按照生产工艺可以分为( )和( )。
【简答题】During the twentieth century there has been a great change in the lives of women. Awoman marrying at the end of the nineth century would probably have been inher middle twenties. She might have se...
【简答题】Once when I was a ager, my father and I were standing in line to buy tickets for the circus. Finally, there was only one family between the ticket office and us. This family made a big impression ...
【单选题】The following is an abstract, consisting of 5 sentences. Which key element does Sentence ②describe?Abstract: ①Anxiety about tests and test-like situations was examined in a series of studies of elemen...
A.
the key results or findings
B.
background information
【单选题】The children______________many times not to get closed to the fire.