增加：在缺词处加一个漏词符号（︿），并在其下面写出该加的词。

删除；把多余的词用斜线（ \  ）划掉。

修改：在错的词下划一横线，并在该词下面写出修改后的词。

注意：1）每处错误及修改均仅限一词；

2）只允许修改10处，多者（从第11处起）不计分。

    In my school life, a most unforgettable person is my math teacher. Not only did she helped us in class but also after class. I still remember the time that I got a “B” in the final exam. I liked math best and the teacher took pride in me all the time. However, I failed. I felt so disappointing that I lost my energy and patience. Then one day, I happened meet her in the street, and my face turned red right away. She told me not to give up and encourage me to work much more harder. Later, he offered me a great many suggestion on learning math. In addition, she cared for my feelings. Under her help, I made great progress.

由碳原子构成的纳米碳管可以作为储存氢气的优良容器，其单层部分结构示意图如图，下列说法正确的是（　　）

生物体由小长到大的原因是（　　）

给划线的字选择正确的读音

教书____（jiāo  jiào）   便宜____（ pián  biàn）

窟窿____（lónɡ  lonɡ）   石缝____（fènɡ  fénɡ）

否则____（ fǒu    fǎo）   凝视____（nínɡ　 yí）

下列加线词语使用正确的一项是（     ）