单选题：According to the passage, the premium system __

题目分类：专四
题目类型：单选题
号外号外：注册会员即送体验阅读点！

题目内容：

According to the passage, the premium system __ A．was an American invention
B．appeared before the patent system
C．is as important as the patent system
D．is supported by the federal government

参考答案：【答案仅供学习，请勿对照自行用药等】

答案解析：

Jean doesn't want to work fight away because she thinks that

Jean doesn't want to work fight away because she thinks that if she __ a job sh

分类：专四题型：单选题

查看答案

We told you that he would come tonight,______．

We told you that he would come tonight,______．A．didn't we B．did we C．would he D．

分类：专四题型：单选题

查看答案

构成CPU的主要部件是（　　）。

构成CPU的主要部件是（　　）。A．内存和控制器 B．内存、控制器和运算器 C．高速缓存和运算器 D．控制器和运算器

分类：专四题型：单选题

查看答案

世界上公认的第一台电子计算机诞生的年代是（　　）。

世界上公认的第一台电子计算机诞生的年代是（　　）。A．1943 B．1946 C．1950 D．1951

分类：专四题型：单选题

查看答案

Which of the following statements are INCORRECT?

Which of the following statements are INCORRECT?A．Polish people have more money

分类：专四题型：单选题

查看答案