1、。。。。。。The  areas  of   the  map where earthquakes are most likely to occur are called earthquake "belts"........依据这句可以回答下面这个题目。
  Earthquake  belts are ___________.
A .maps that  show where earthquakes are likely to occur
B.zones with a high  probability of  earthquakes
C.breaks between two sections of the earth's surface
D.the two layers of earth along a Fault

答案为B，但我想问老师为什么不选A了？

2、........To  fees a large population ,inferior land must be cultivated and the good land worded intensively.Thus ,each person produces less and this means a lower average income than that could be obtained with a smaller population........依据这句可以回答下面这个题目
A  small population may mean____________.
A. higher productivity, but a lower average income
B. lower productivity, but a higher average income
C.lower  productivity and a lower average income
D. higher productivity and a high  average income
答案为B，但我想问老师为什么不选D了？

1、。。。。。。The  areas  of   the  map where earthquakes are most likely to occur are called earthquake "belts"........依据这句可以回答下面这个题目。
  Earthquake  belts are ___________.
A .maps that  show where earthquakes are likely to occur
B.zones with a high  probability of  earthquakes
C.breaks between two sections of the earth's surface
D.the two layers of earth along a Fault
选A不对。如果选A的话句子的主句是 Earthquake  belts are maps.  (地震带是地图) 所以不对，遇到这种问题可以把句子先缩句，找到句子的主干，这样会很有利于抓住主要的意思。

2、........To  fees a large population ,inferior land must be cultivated and the good land worded intensively.Thus ,each person produces less and this means a lower average income than that could be obtained with a smaller population........依据这句可以回答下面这个题目
A  small population may mean____________.
A. higher productivity, but a lower average income
B. lower productivity, but a higher average income
C.lower  productivity and a lower average income
D. higher productivity and a high  average income
个人觉得应该选D.

非常谢谢老师的答复!!