选择题：Playing a musical instrument is a valuable experience for a child.They teach them many important things.

To swim properly, a course of instruction is necessary.这是一个关于大学英语的相关问题，下面我们来看答案是什么，To swim properly, a course of instruction is necessary.A.正确B.错误正确答案：错误

Darwin's most important book, On the Origin of Species, was the result of many years of research.这是一个关于大学英语的相关问题，下面我们来看答案是什么，Darwin's most important book, On the Origin of Species, was the result of many years of research.A.正确B.错误正确答案：正确

Not only you but (also) I am to blame.这是一个关于大学英语的相关问题，下面我们来看答案是什么，Not only you but (also) I am to blame.A.正确B.错误正确答案：正确

In 1860, a better plan was put forward by an Englishman, William Low.这是一个关于大学英语的相关问题，下面我们来看答案是什么，In 1860, a better plan was put forward by an Englishman, William Low.A.正确B.错误正确答案：正确

JSP被服务器编译后的后缀名是（）。这是一个关于后缀名 被服 JavaWeb应用程序开发的相关问题，下面我们来看答案是什么，JSP被服务器编译后的后缀名是（）。A..classB..javaC..jspD..servlet正确答案：.class