Things always change in an unexpected way. Please describe a thing you have recently done that, ten years ago, you never imagined you would do.
You live in a crowded city with only one green space-the city park. The government recently proposes to build a housing complex on this only green space. Do you think this is a good idea?
标题: Professor should grade all students’ assignment
原因1：Professor can give more detailed and useful feedback compared with those graduate students, who might be learning themselves.
原因 2：Professor can have a better understanding of students’ progress and adapt the class to students’ need.
原因1： graduate students批改作业分散任务，不累。通常一个班级100多人，如果教授一个人要批改所有作业，教授会很辛苦，并且没有那么多时间。
定义： When companies make advertisement to attract consumers, one of the strategies they adopt is called fear appeal. That is, they present some negative events or outcome people may encounter, and then provide solutions with their products or service.
问題: The woman cannot pay her bill because she used air-conditioner in the summer too much. She didn’t expect that the fee will be so expensive. She needs to pay in three weeks.
解决方案1：She can work more hours during her part-time job at the café.
优点1 She can earn enough money to pay the bill if she works on Friday.
缺点1：Her friends will come to visit her and she doesn’t leave her friends alone.
解决方案2：She can ask their parents for help.
优点2：Her parents definitely can pay the bill and she doesn’t need to worry about the money anymore.
缺点2：Her parents just paid textbooks for her recently. She doesn’t want to ask too much from parents.
话題：Plants also have sensory ability.
要点1：sense the odor
例子1：Vines smell odors to detect water and nutrient.
要点2 ：sense the sound
例子2：some plants can sense the sound animals make to protect themselves. When they notice animals approaching, they can emit some chemical to prevent the animals from eating them