题目

阅读理解Are cell phones making the human stupid? According to a new study out of Britain, the answer is yes. Cell phones are reducing the human power and we can see it from the numbers.Professor Ian Robertson of Trinity College Dublin carried out the study. His research found that most people in Britain have to remember five passwords(密码), five pin numbers, two number plates, three security ID numbers, and three bank account numbers — quite a lot to just get through the daily life! To get around this, most people use only one or two passwords. Cell phones, laptops, and other memory m隋朝末年，走水路从余杭到长安，依次经过的几段运河是 ①广通渠　②永济渠　③通济渠　 ④白渠　⑤江南河　⑥邗沟　　　　　　　　   [　　] A．②③⑤①B．④③②① C．⑥④①⑤D．⑤⑥③①