第一节 短文改错
此题要求改正所给短文中的错误。对标有题号的每一行作出判断：如无错误，在该行右边横线上画一个勾(√)；如有错误(每行只有一个错误)，则按下列情况改正：
多一个词：把多余的词用斜线(—)划掉，在该行右边横线上写出该词，并也用斜线划掉．
缺一个词；在缺词处加一个漏字符号(∧)，在该行右边横线上写出该加的词。
错一个词；在错的词下划一横线，在该行右边横线上写出改正后的词。 注意：原行没有错的不要改。
Early men did not have clocks. They were told time
76. ______ by
the sun and shadows of trees. At first time, they used
77. ______ sticks placed in the ground
instead trees. They made
78. ______ marks in the ground, and the shadows from the sticks
told 79. ______ the
time of day. Later, men began to use sundials. Some of
80. ______ sundials were boxes with sticks cast a
shadow. Men were
81. ______ able to take the sundial box with them. The mark for noon
82. ______ was very
important. The sundials always have to face the same
83. ______ way or the time was wrong. Sundials were good only on
sunny 84. ______ days, not on
cloud days. They were the first kind of clock.
85. ______