购买说明
1.用户开通包月会员可以有查看次数。
2.用户也可以按需充值相应的金币购买。
3.购买前请仔细核对资源信息,充值后非质量问题不退换。
趣找答案
21.What can students do during the talk?A.Run the live talk as facilitators.B.Learn about science careers.C.Do research with collections.D.Interview scientists in turn.22.What is a must to attend the event?A.Reserving in advance.B.Having a membership.C.Being a group of over 90.D.Sharing a show with others.23.Who is the text mainly intended for?A.Scientists.B.Students.C.Parents.D.Teachers.