For this part, you are allowed 30 minutes to write a short essay. You should start your essay with a brief description of the picture and then express your views on How to Study Efficiently? You should write at least 120 words but no more than 180 words.

How to Study Efficiently?
As students, we study every day. However, not everybody knows how to study efficiently. The above graph helps us know better about it.
This graph shows the relation-ship between the study efficiency and the hours spent in studying a day. From it, we can see that more hours of study do not necessarily result in higher study efficiency. In the graph, the optimal efficiency comes when one studies about 5 hours and the efficiency begins to drop as he or she studies longer than that. When one studies 10 hours per day, there is the lowest efficiency of study.
In conclusion, more time spent in study doesn’t always mean greater efficiency. To study efficiently needs not only total concentration but also adequate relaxation.