-Let's play tennis.
-_______. I don't like it.
A:That sounds good
B:That sounds boring
C:That sounds interesting
D:That sounds relaxing
李约瑟在《中国科学技术史》中,列举了中国古代科技向西方传播的水力冶炼鼓风机等26项发明。而在列举公元3—18世纪西方传入中国的技术发明时,李约瑟只找到了4项。以上现象说明( )