1、原理：用低温处理植物分生组织细胞，能够抑制纺锤体的形成，以致影响染色体被拉向两极，细胞也不能分裂成两个子细胞，于是，植物细胞染色体数目发生变化。

第二节 书面表达：(满分25分)

假如你是李华，今年上高三，高考在即，看到大家每天为自己所做的一切，深有感触。请根据下表提示，写一篇100字左右的短文，可增加细节，适当发挥。

郑州市第四十七中学高三第一次月考英语试题　 (September 11, 2010)

第一节：短文改错(共10小题；每小题1分，满分10分)

文中共有10处语言错误，每句中最多有两处。错误涉及一个单词的增加、删除或修改。

增加：在缺词处加一个漏字符号()，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、每处错误及其修改均仅限一词；

2、只允许修改10处，多者(从第11处起)不计分。

My parents and I went to the park last Sunday. There were lots of visitors stand in front of the ticket window.

We waited a long time and buy three tickets. In the Tiger Mountain of the park, I was too eager to see the fierce

frightened animals that I quickened my steps through the crowd. Unfortunate，I got separated from my parents. I

had hard time looking for them, and I had no luck. Wandering in the park，I felt alone without any companions.

Worse still，I had no money, so I had to walk to home, covering as much as 5 kilometer.　

35. _________ surprises us most is that she doesn’t even know _________ the difference between “speak” and “talk” lies.

　　 A. What; where　　 　　　　 　　　　　　　 B. What; which　　 　　　　　　　 C. What; what　　　　　　　 D. That; where