【单选题】I first joined Twitter two years ago as a means of keeping in touch with my son.(Text B, Unit 1) Which of the following words can replace the word “means” in the previous sentence?

【判断题】装载存储器的作用是保存程序指令块和数据块以及系统数据（组态、连接和模块参数等），也可以将项目的整个组态数据（包括符号和注释）保存在装载存储器中。

【简答题】1. What was the difference between the present situation and the situation when Churchill came to Harrow School ten months ago? (Paragraph 1) 2.What lesson had they learnt? (Paragraphs 3 — 4) 3. Why d...

【单选题】骨肉瘤病人最常见的肿瘤转移部位是

【判断题】骨肉瘤最常见的转移部位是肝。

【简答题】Choose the word or expression from the box to replace the underlined part in each sentence. (从方框内选择与划线部分意思最接近的单词或短语，用A，B，C…或G等表示。) A．brave and not weak    B．a company    C．liked by many people D．shoes...

【多选题】电子琴项目中包括()模块。

【简答题】幼儿园课程的种类包括( )和( )。

【多选题】计算器项目中包括()模块。

【简答题】When did economists begin to yze consumer behavior? Why? 2.Explain the concept of Utility. Can you find a word used in everyday life to replace the word "utility"?