下面每个句子中均有1个词或短语划有底横线，请为每处划线部分确定1个意义最为接近的选项。

Mr. Henley has accelerated his sale of shares over the past year.

A. held                   

B. offered              

C. increased          

D. expected

The study also notes a steady decline in the number of college students taking science courses.

A. relative                

B. continuous          

C. general            

D. sharp

The high-speed trains can have a major impact on our lives.

A. effort                  

B. problem             

C. concern            

D. influence

We have to act within the existing legal framework.

A. limit                   

B. procedure           

C. status              

D. system

She always finds fault with everything.

A. criticizes               

B. simplifies            

C. evaluates          

D. examines