短文改错(共10小题；每小题1分，满分10分)
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：
此行多一个词：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。
此行缺一个词：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。
此行错一个词：在错的词下画一横线，在该行右边横线上写出改正后的词。
In Grade Eight I took physics.In one test I get 56._______
only 36 percent of the answer correct.I failed the 57._______
next one,either,I started to think that maybe I was 58._______
not good at it.However,I was not lucky enough to 59._______
have a teacher which didn’t take my bad grades as a 60._______
judgement of my abilities,but simply like an indication 61._______
how I should study harder.He pulled me aside and told 62._______
me that he knew I could do better.He permitted to retake 63._______
the test,and I was pulled my grade to an A.This is what 64._______
I discovered just because a subject is difficulty to learn， 65._______
it doesn’t mean you are not good at it.
；船速大于水速，小船可以垂直河岸渡河，此种情况下的渡河时间
。所以不正确的说法是D选项。