1.他的话表明了他已经意识到不努力学习新知识的危险.( indicate;be conscious of )
2.这是他第一次在这么多的听众前演讲.(a large audience)
3.上海已今非昔比,因为大多数的旧房子已推倒,被新楼代替了.(make room for)
4.请记住:发生任何紧急情况,拨打110.(in case of )
5.令环保主义者忧虑的不是自然灾害而是人类的活动.(not...but...)
6.磁悬浮列车时速为400多公里,它已成为沪上一个旅游景点.(cover)
參考答案:His words indicates that he has already been conscious of the danger of not trying his best to learning new knowledge.
This was the first time that he make a speech before such a large audience.
Shanghai is not what it was before,because a majority of the old houses made room for the new high building.
Keep in mind:call 110 in case of any emergency.
what worries the environment-protectors is not the natural disasters buts the activities of the human beings.
The maglev train covers more than 400km per hour,and has already been a tour spot in Shanghai.
我自己写的。