题目

When you try too hard but you don’t succeed; when despite all your efforts you don’t get the results you need, give up and move on. 【1】 Confused? What is wrong with giving up?Oh yes, we all have been trained and conditioned to work hard to achieve our dreams, and that is a good thing. The problem arises when all these inspirational quotes start confusing us. These messages tell people not to give up, 【2】 They tell one to “ try and try again” until they succeed, but that amount of effort should only be put toward what you really want in life and one should never quit at what the细胞进行有丝分裂是有周期性的，那么，一个细胞周期包括A.分裂前期、中期、后期、末期B.分裂间期核分裂后期、末期C.分裂间期和分裂前期、中期D.分裂间期和细胞分裂期