three possible theories of what a sea-dwelling microorganism’s eye might be for
阅读给出三种观点:
1.The eye is used for following preys;
2.The eye is used for sensing sunlight;
3.The eye is used for aiming at other tiny life forms when it is going to stab them.
听力逐一反驳:
1.Other closely related microorganisms,which have no eyes,could follow their prey successfully.Therefore,their eyes must be for other purposes;
2.Scientists studying the evolution of microorganism find that they are becoming less and less dependent on sunlight for energy.Compared with their ancestors,the sea-dwelling microorganism is with a much more complex eye,so it must have other functions;
3.After examining the eye thoroughly,researchers find that its eye couldn't focus quite well,thus not being able to have better accuracy at other tiny life forms when stabbing them.
Task 2 INDEPENDENT 独立写作
话题类别:政府类
考题文字:
The government wants to improve the education of high school,and there are two plans:
1.choose a group of good teachers and train them first,and after that let them go back to their schools and train other teachers;
2.provide training for every teacher online,with providing online materials and let them study individually.