【简答题】Rewrite the following sentences on the basis of general principles of business letter-writing : We request the favour of a reply at your earliest convenience.
【简答题】第一单元的单元导学写着(),()。所以第一单元的主题是让我们了解各地的民()民()。为我们提供了()()()()四篇课文,通过学习有关课文中的分清(),体会作者如何()主要部分的,让我们以()为主题,写一篇习作。习作时注意()()。
【判断题】气相色谱法和液相色谱法是根据流动相的不同分类的
【简答题】Task 4 Rewrite the following sentences after the models. (Model 2) 1. You will go past the post office. Will you drop the letter in the post box? 2. I was doing my homework. My father was watching TV...