To build a harmonious society, we must ________ low-paid citizens and poor population．

1. A.
   turn to
2. B.
   get down to
3. C.
   devote to
4. D.
   pay attention to

----To build a factory is beneficial to the locals, but on the other hand, it will be not  environmentally friendly.  

  ---- That’s_____ environmental protection organizations disagree.

  A. what    B.where     C. how   D. which

----To build a factory is beneficial to the locals, but on the other hand, it will be not  environmentally friendly.

  ---- That’s_____ environmental protection organizations disagree.

  A. what    B.where     C. how   D. which

To build a harmonious society, we all have a part to play in the fight ____ injustice, unemployment and crime.

A. over                           B. by                              C. for                          D. against

Students build up their vocabularies by          of reading more.

    A．ways     B．help C．means    D．assistance