设集合S={$A_0,A_1,A_2,A_3$}，在S上定义运算为：$A_i\oplus A_j=A_K$其中k为i+j被4除的余数，i、j=0,1,2,3.满足关系式$=\left(x\oplus x\right)A_2=A_0$的x(x∈S)的个数为（   ）

阅读理解
    Different weather makes people feel different．It influences health，intelligence and feelings．
    In August，it is very hot and wet in the south the US．People there have heart trouble and other kinds of health problems during this month．In the Northeast and the Middle West，it is very hot in the summer and very cold in the winter．People in these states have more heart trouble after the weather changes in February or March．
    The weather can also influence intelligence ． For example，in a 1983report by scientists，IQ(智商)of a group of students was very high when a very strong wind came, but after the strong wind,
    Their IQ was 10% lower than before. The wind can help people have higher intelligence. However,very hot weather can make it lower. Students in many schools of the US often get worse in exams(考试)in the hot months of the year(July and August).
    Weather also has a strong influence on people's feelings．Winter may be a bad time for thin people．They usually feel cold during these months．They might feel unhappy during cold weather．But fat people may have a hard time in hot summer．At about 18℃people become stronger．Low air pressure may make people forgetful．People leave more bags on buses and in shops on low-pressure days．
    Are you feeling sad，tired，forgetful，or unhappy today？It may be the weather's problem．

（2015•北海）因地球环境破坏，全球气候普遍变得恶劣，今年夏天印度某些区域异常狂热，气温高达50℃，道路开始融化，图中所示，太阳暴晒后的路面材料温度急升，材料内能____ （选填“增大”、“减小”或“不变”），这是通过____ 方式（选填“热传递”或“做功”）改变了材料的内能．

测量温度的工具是温度计，常用温度计是根据液体的____规律制成的．小杨同学在测量室外温度时发现温度在不断升高，温度计内的水银柱慢慢升高，对于温度计内的水银柱而言，它的____在增大（选填“密度”或“质量”或“温度”）

下列诗句中，描述南方地区地理特征的是(   )