.培育“试管山羊”的基本过程如下图所示，若要培育成功，下列叙述正确的是

非生物因素只有阳光、温度和水．

    It is generally believed that obesity is a global epidemic and crisis. But people's view on weight is keeping us from doing things to help us get ____ healthy body. Obesity researchers hate____ when I say this, but their own data shows that obesity is not going to kill us. Most obese people don't have ____(short) lifespans (寿命) than non-obese people and in fact it's the underweight people ____ are at most at risk.

    So why does everybody think obesity is deadly? One reason is that obesity is associated with three different things that ____(be) deadly and lead to shorter lifespan: being sedentary (久坐);____ (have) lower income; and not getting enough medical care. Everyone, the medial the medical community operate from the firm ____ (assume) that obesity is deadly. So any evidences contradicting that are ignored. It is true that obese people are more likely ____(get) diabetes and cardiovascular disease. But there are two things you need to realize. First of all, the obesity paradox. When obese people get the ____ (disease), they're less likely to die of them than non-obese people. Second, to reduce the risks that you may suffer from, you don't ____ (actual) have to get thin. You just need to exercise.