Faced with such difficulties, there is no choice for them but to quit.
Fighting against the bad weather, an umbrella can shelter people from wind and rain.
After seeing so many experiments, smokers become aware of the harm of smoking.
Having suffered such heavy pollution already, it may now be too late to clean up the river.
Judging from his appearance, we may guess that he is an old doctor.
送给同学们一句话:要珍惜学习的每一分钟,而不是珍惜每一分钟去学习。备战考研是一个持久战,不论多深的痛苦,也会有结束的一天,坚持下去你就赢了。以上内容希望对大家有所帮助,预祝大家都能取得好成绩!