在每小题列出的四个备选项中只有一个可以替代句中划线的单词或词组，请将其代码填写在答题纸相应的位置上。错选、多选或未选均无分。

1. His employer transferred him to another office.

A. renovated                                                 B. changed

C. aspired                                                     D. exchanged

2. The Chinese government plans to speed up rural development.

A. distribute                                                B. contribute

C. moderate                                                D. accelerate        

3. This boom in adult education, in turn, helps to raise the intellectual standard of the whole country.

A. growth                                               B. measure

C. bonus                                                   D. behemoth          

4. Companies like IBM and Dell are starting to offer comparable packages for open source solutions.

A. similar                                                      B. reliable

C. cyclical                                                    D. considerable