1. Agree or disagree：a good school should have large book collection

　　2. Some people prefer to wash dishes by a dish washer. Others prefer to wash dishes by hands. Which do you prefer and why?

　　3. Do you agree or disagree with the following statement? It's impolite to make calls or send text messages on a diner table. Explain in details.

　　4. While doing group projects, some students prefer to lead, others prefer to support. Which do you think is better and why?

　　5. Do you agree or disagree with the statement that it's easier to teach primary school students than to teach university students.

　　植物的叶子在夜间闭合的三个理论(plants fold leaves at night)

　　阅读：

　　第一个理论：有助于保温 protection against losing heat。

　　第二个理论：防止真菌感染 protection against fungal spores infection，不让雨水进去。

　　第三个理论：避免接受月光，以此跟随季节变化。

　　听力

　　第一个理论：没有帮助，因为植物没有internal heat，在遇到冷的天气，尤其是冰点以下时不能避免冻害。

　　第二个理论：下雨时即便叶子闭合，也会有少量雨水进入，而真菌fugal spores只需要少量雨水即可，因此事没有意义的。

　　第三个理论：举了一个反例。在一些denser的森林中，有些植物即便在树荫下接收不到月光，也会比和叶子，因此需要他的解释。