答案 He became involved in calculations of the greenhouse effect on earth and found that our atmospheric composition was 点我阅读全文
A observed warming of 0.4 degrees Celsius in the prior century was consistent with the greenhouse effect of increasing C 点我阅读全文
please listen to the video in the website on the issue of social media and then answer the following questions（1分55秒到1分5 点我阅读全文
A We have no communication in dinner. B We are turning to be more technical. C We don’t hug or touch each other often no 点我阅读全文
(2分到2分14秒)The woman mentions that she doesn’t want the social media to run her life because______ A She has seen so many 点我阅读全文
please listen to the video in the website on the issue of social media and then answer the following questions (2分15秒-2分 点我阅读全文
（1分47秒-1分55秒）When the speaker here mentions that he feels that he is like a phony, he actually means thatA He is honestl 点我阅读全文
A One can see what’s happening outside with your friends anywhere. B Social media can make one jealous. C Social media c 点我阅读全文
(43秒-54秒）According to the lady, her attitude towards social media isA Positive, because there are abundant resources lik 点我阅读全文
A For his generation ,he is a little bit overusing the social media. B For his generation, he is reasonably involved for 点我阅读全文
please listen to the video in the website on the issue of social media and then answer the following questions(18-26秒） T 点我阅读全文