小题1:D
小题1:A
小题1:D
小题1:B
小题1:细节题，由第二段的Firstly, we keep in touch with people by using them. Because of our busy life, we have little time to meet friends and our beloved ones. 可知我们很忙，所以用手机来联系，所以选D
小题1:猜词题，根据第二段的When an emergency happens, we can call for help using our phones我们看出需要求救的情况应该是令人担忧
危险的情况。故选 A
小题1:排除题，从第三段里这段话， they are spending less and less time with their family and friends. Phones give them more excuses to stay out of reach. Because of the convenience, the love and care between people has changed into a few words in a message or a phone call. A、B、C都提到了，就是没有D。
小题1:归纳题，根据最后一段In the end, I hope you can think about the advantages and the disadvantages, and use your mobile phone correctly.得出结论作者是想劝大家正确使用手机，所以B正确。