题目

  If something that you’re doing doesn’t challenge you, then it doesn’t change you. We all need some normal stress in our lives, after all.   36  So challenge the following limits:    Figure out what you’re scared of and do it continuously.    If you’re a salesman, and you’re scared of talking to people personally or over the phone, now, instead of being scared and thinking you'll fail, spend at least five minutes a day to pick up the phone and make a call.   37  But don’t stop on the first try! Eventually, you can look at fear in the eyes and say, “Go on, I把兔子的某信使RNA移入大肠杆菌细胞中，大肠杆菌可以合成兔子的血红蛋白。该实验说明 [　　] A．兔子的血红蛋白基因成功地转移到了大肠杆菌细胞内 B．兔子的血红蛋白是在核糖体上合成的 C．兔子的DNA可以指导大肠杆菌合成兔子的蛋白质 D．兔子的信使RNA携带的遗传信息在大肠杆菌内被翻译