题目

阅读下面短文，从短文后所给各题四个选项（A,B,C,D）中，选出可以填入空白处的最佳选项，并将答案写在答题卡上。 Sometimes I really doubt whether there is love between my parents. Every day they are very busy trying to __21__ in order to pay the high tuition(学费) for my brother and me. They don’t act in the __22__ ways that I read in books or I see on TV. In their opinion, “I love you” is too __23__ for them to say. Sending flowers to each other on Valentine’s Day is even more out of __24__.  One day, my mother was sewing a quilt（缝被    读下图，回答3～4题。 3．该流域所属气候类型最可能是    A．温带海洋性气候                   B．热带沙漠气候    C．温带大陆性气候                   D．热带季风气候 4．导致水库泥沙沉积厚度出现年际差异的主要因素是    A．降水量                           B．植被覆盖率    C．人口数量                         D．地貌形态