Being safe in your everyday life needs knowledge. If you remember the following information，your life will be much safer.
● Always notice the environment around you. You shouldn't walk alone outside late at night. Make sure where the public phones are. If anything dangerous happens，you can find them easily.
●Your bag should be carried towards the front of your body instead of putting it on your back。When a bus is full of people，it is easy enough for a thief to take away the things in the bag on your back.
●If you are followed by someone you don’t know, cross the street and go to the other way, let the person understand that you know he or she is after you. Next，don't go home at once. You are safer in the street than you are alone in your home or in a lift.
●If you have to take a bus to a place far away, try to get to the stop a few minutes earlier before the bus leaves. This stops other people from studying you. On the bus，don't sit alone. Sit behind the driver or other people. Don't sleep.

我国反对生殖性克隆，不反对治疗性克隆，因为治疗性克隆能最终解决供体器官的短缺和排斥反应这两个制约器官移植的重要问题．下图是治疗性克隆的过程图解．

（1）“治疗性克隆”的结果说明高度分化的体细胞的核仍然具有____ ．相同的胚胎干细胞，“克隆”的结果各种各样，如有的是胰岛细胞，有的是血细胞，有的是心肌细胞，究其根本原因是基因的____ ．

（2）重组的新细胞经过发育，要想获得基因型完全相同的两个胚胎，可采用____ 技术．

（3）若将上述技术用于白血病病人的骨髓移植，图中患者是O型血，提供卵细胞的女性是AB型血，则骨髓移植成功后患者的血型是____ 型．

（4）科学家为何要将患者的体细胞的核植入去核的卵细胞，而不直接用体细胞进行细胞培养____ 

（5）按上述方法克隆器官在器官移植方面的主要优点是____．