在变更准备之前或在变更准备的过程中，如果累计合同变更使合同价格增加或降低超过（），承
题型：单项选择题
问题：
在变更准备之前或在变更准备的过程中，如果累计合同变更使合同价格增加或降低超过（），承包商可以向业主发出一份书面声明表示反对通知。
A.15％
B.20％
C.25％
D.30％
题型：单项选择题
| 完形填空。 | |||
| Last year my English class was 1 for me. First of all, it wasn’t easy for me to understand the teacher when she 2 to the class. To begin with, she spoke too quickly, and I couldn’t 3 every word. Late  r on, I realized itdoesn’t matter if you don’t understand every word, 4 I was afraid to speak in class because I thought my classmates might laugh 5 me. I couldn’t always make complete sentences, either. Then I started to 6 English-language TV.It helped a lot. I think that doing lots of listening practice is one of the secrets of 7 a good language learner. Another thing that I found very difficult was English 8 . So I decided to take lots of grammar notes in every class. | |||
| ( )1. A. lucky ( )2. A. talked ( )3. A. think ( )4. A. either ( )5. A. to ( )6. A. watched ( )7. A. making ( )8. A. grammar | B. happy B. talk B. believe B. neither B. with B. watch B. becoming B. words | C. difficult C. sing C. forget C. also C. at C. watches C. changing C. pronunciation | D. great. D. sang D. understand D. too D. in D. watching D. turning D. tests |