第4题: [单项选择]On what point do the conservationists and politicians agree
A Wool exports are vital to the economy.
B The fence poses a threat to the environment.
C The fence acts as a useful frontier between states.
D The number of dogs needs to be reduced. 参考答案:B 答案解析:Para 2: ... such a barrier would never be allowed today on ecological grounds. = people would protes
第32题: [单项选择]计算机硬件功能部件中,完成对数据加工的部件是( )。 A. 运算器 B. 控制器 C. 存储器 D. 输入/输出设备 参考答案:A 答案解析:[解析] 运算器是用于对数据进行加工的部件,可进行算术运算和逻辑运算;存储器是计算机的记忆装置,主要功能是存储程序和数据;输入/输出设备是外部向计算机传送信息的装置。