题目

No Mobile Means You’re Not in Touch My household now has four mobile phones: one for me; one each for my eldest children, the twin boys; and one for my 15-year-old daughter. Only my 12-year-old son does not (yet) have his own mobile. In other words, we’re now in line with national figures, which show that Australia has 19 million mobile phones for a population of just over 20 million people. Among 15-to 17-year-olds, nearly nine out of 10. The reality is that a mobile phone is the coolest thing of all for a teenager to own. It’s even more important than a television, a DVD player or acce如图表示某一人体内的几种正常细胞，这些细胞的    （    ） A．全能性相同                                B．细胞器的种类和数量相同    C．基因相同                                  D．mRNA的种类和数量相同