．一个铁球的质量是1．56kg，体积是0．5dm3，这个铁球是空心的还是实心的?

很多人在谈话中喜欢引用名人的话，恰当地引用名言能使你的表达增色不少。请仔细阅读方框中的名言，然后将它们与题中的话语配对。

A．A friend in need is a friend indeed． B．If winter comes，can spring be far behind ? C．Follow your own course（路径），and let people talk． D．Give a man a fish and he will eat for a day．Teach a man to fish and he will eat for the rest of his life． E．Good painting is like good cooking；it can be tasted，but not explained．

Sarah：Don’t care too much about what they have said，Tony．小题1:        
Stephen：Thanks for helping me，Amy．小题2:    l’m so proud of having a friend like you．
Mr. Lee：Teachers should tell the kids not only what to do，but also how to do that．小题3:   
Alan：Don’t be upset,Jeff．小题4:    The great success is just in front of you．
Sally：I don’t want to hear the tour guide introduce the paintings in the gallery．小题5:   Don’t you think so ?