The main idea of the passage is________.

For this part , you are allowed 30 minutes to write an essay with the title Social Practice . You are required to write at least 120 words , following the outline given below:1.社会实践的作用；2.可能产生的问题；3.你的建议

他从来没有想到会在伦敦遇到老同学。

必须立即采取有效措施以防此类事件再次发生。

因为天气变幻无常，我们没有出去野餐。

她希望自己明天面试时会有好运。

你明天出去时最好带上雨伞，以防下雨。

The modern communication industry the way people live in society and broadens their horizons by allowing access to information , education and entertainment .

Memory exists not only in humans and animal but also in some physical objects and machines .

If we travel in buses , buy things in shops, or eat in restaurants , we are likely to have conversations where we give information or opinions , receive news or comment , and very likely have our views challenged by other members of society .

Nowadays , most people own watches but they still seem to find plenty of other questions to ask the policeman .