题目

下列化肥中，属于复合肥料的是（ ） A． 硫酸钾 B． 硝酸钾 C． 碳酸钾 D． 氯化钾 答案：B【解析】 植物生长的营养元素主要有氮、磷、钾；含有氮元素的化肥属于氮肥，含有磷元素的化肥属于磷肥，含有钾元素的化肥属于钾肥，同时含有氮、磷、钾三种元素中的两种或两种以上的化肥属于复合肥。 【详解】 A、硫酸钾中含有钾元素，属于钾肥，故不符合题意； B、硝酸钾中含有氮元素和阅读下面短文，根据所给语境，按要求完成下列各题。 Failure is a part of life. No matter what we do, there are always two results：success and failure. There is no doubt that every one of us wants to be successful, but we can’t always avoid failure. People have different opinions about the failure. Some people regard failure as a bad thing. They hold that they should always do everything well. If they fail in something, they will lose their confidence. Other people regard failure as a chance to learn. They redo(重做) what they failed to do.（1）They know complaining won’t help themselves. As an old saying goes, “Failure is the mother of success.” （2）As long as we keep to what is right and correct what is wrong in time, we will have success. In my opinion, failure is not bad, it’s not good, either. 1.根据（1）处完成下面的句子。（每空一词） They ___________________ think complaining ___________________ themselves. 2.将（2）处翻译成汉语。 _______________________________________________________________________________ 3.根据短文内容填空。（每空一词） When we fail in something, we shouldn’t _________ but __________ it again until we can succeed.