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.

《针灸甲乙经》对各科病证的针灸治疗进行了归纳和论述，是继《黄帝内经》之后对针灸学的又一次总结，在针灸学发展史上起到了承前启后的作用。

《针灸甲乙经》收录了腧穴的名称、定位和刺灸法，一共有（）

A.365个

B.356个

C.341个

D.354个

E.349个