读“经纬网示意图”，回答下列问题：（1）写出A、B、C三点的经_爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题问答题

读“经纬网示意图”，回答下列问题：

（1）写出A、B、C三点的经纬度：

A______，______；B______，______；C______，______．

（2）从东西半球看，B点位于______半球，从南、北半球看，A点位于______半球．

（3）位于中纬度的点有______，位于低纬度的点有______．

（4）B点位于A点的______方，C点位于B点的______方．

答案

（1）根据180°经线西侧为东经，东侧为西经，0°纬线以北为北纬，以南为南纬，判定图中各点的经纬度为：A、140^?E 40^?N，B、180^?20^?S，C、0^?160^?W；

（2）西半球的经度范围是20°W以西160°以东的半球，判定B（180^?20^?S）位于东西半球的西半球；北纬属于北半球，判定A（140^?E 40^?N）位于南北半球的北半球；

（3）30°～60°为中纬度，60°～90°位高纬度．判定A点位于中纬度，B、C位于低纬度；

（4）根据经线指示南北方向，纬线指示东西方向，判定B点位于A点的东南方，C点位于B点的东北方．

故答案为：

（1）140^?E 0^?；180^?20^?S；160^?W 0°；

（2）西；北；

（3）A； BC；

（4）东南；东北．

完形填空

Feeling lonely can make you sick. Doctors have long known that loneliness can cause many health problems and even death. What they didn’t know is   16  this feeling causes illness. A study in the online magazine Genome Biology  17  that loneliness actually influences the important part of our bodies—our genes.
In a small population of patients, researchers   18  more than 20,000 genes to compare how the genes of lonely and non-lonely individuals (个体) express themselves in molecular processes (分子过程) and in personal health. They found that gene expression is   19  in chronically (长期地) lonely people. “We now have a new way for understanding the relationship   20   social experience and physical health,” explains the study’s lead author, Steve Cole of University of California, Los Angeles.
“This study—the first to link (联系)   21  with gene changes—is special and exciting,” says Emma Adam, a professor of human development at Northwestern University. “It   22  in the black box.”
According to John Cacioppo, an author of the study from the University of Chicago, the
work suggests that loneliness is a warning   23 , much like physical pain. “This feeling is so bad because   24  of us wants to be forgotten; that’ s also what human means,” he says. “It makes us   25  for other people and want to be with friends when we’re lonely.”

C．interesting

填空题

糖尿病患者的年龄相关性白内障较多见，与无糖尿病的年龄相关性白内障( )，但发生( )，进展( )，容易( )。