________ the compass was first made in China.

[　　]

___________, the compass (指南针) was first made in China.

[    ] 　　

A. It is known to all   B. We all know 　　

C. It is known that　　 D. As is known to all

此行多一词：把多余的词用斜线（ \ ）划掉，在该行右边的横线上写出该词，并也用线划掉。

此行缺一词：在缺词处加一个漏字符号（ /\ ），在该行右边的横线上写出该加的词。

此行错一词：在错的词下划一横线，在该行右边的横线上写出改正后的词。

71 We study quite a few subject, such as maths ,Chinese, English and physics.  71           

72.The mixture of coffee, milk and sugar tastes differently from tea.         72.             

73. What a beautiful weather we are having recently.                     73. ___________  _

74. It is known to all, the compass was first made in China.                74.             

75.He had invited to visit the United States before he finished his great novel.  75. _______   ___