1. The giant panda is an animal unique to China, and Wolong in Sichuan Province is one of the few places in China where ______.
      A. the giant panda lives                                 B. lives the giant panda
   C. does the giant live                                     D. the giant panda is living
   

答案选B,为什么,请详细解释一下,为什么A和D不行,还有A和D什么区别

 2. The first Chinese lunar roving vehicle Yutu landed on ______ the Chinese thought was where a beautiful fair Chang’e lived, the moon, on December 14, 2013.
   A. what                                       B. whose                           C. which             D. its

答案选A,为什么,为什么不选C

3. I think it unwise to live ______ one’s income, as is the case with a lot of young people today, who often turn to their parents for help.
A. beyond                                 B. within                           C. outside                              D. over

答案选A,为什么,看不懂