题目

Many people might feel lost during a major transition(转折)in life. Life coaching, however, is the best choice for anyone who is looking for ways to get through the tough path of life.—【1】 Some life coaches might focus only on certain types of situations, like advancing careers, while others may be willing to help with nearly any life transition.A life coach will often act as an advisor for his clients(客户).【2】 Many times, he will also be able to look at a client’s life with n fair eye and ofter fresh ideas on certain situations. In doing so,the life coach will usually be able下列说法正确的是A．自然界中含有大量的游离态的硅，纯净的硅晶体可用于制作计算机芯片B．金属铝、铁、铜都有一定的抗腐蚀性能，其抗腐蚀的原因都是表面形成氧化物薄膜，阻止反应的进一步进行C．工业上通常用电解钠、铁、铜对应的氯化物制得该三种金属单质D．Si、P、S、Cl相应的最高价氧化物对应水化物的酸性依次增强