下列句子中每句仅有一处错误，请按下列情况改正：

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。

1. Students are encouraged to take active part in discussion.

2. The boy is such helpful that we all think highly of him.

3. Elizabeth has many postcards, all of them were bought in London.

4. Since the 1970s many new applications have found for the computer.

5. Liz was amazing when she found how much the dinner had cost.

乙脑的神经系统症状和体征，哪项不正确？（）

A.多在病程第一周内达高峰

B.眼球震颤，瞳孔变化提示前庭小脑受损

C.呼吸衰竭为本病最严重表现，常与循环衰竭同时发生

D.单瘫较偏瘫，全瘫多见

E.浅反射先减弱后消失，深反射先亢进后消失