题目内容
【题目】下图为某流域年降水量及水库泥沙沉积厚度示意图，读图回答下列各题。
【1】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
【2】导致水库泥沙沉积厚度出现季节差异的主要因素是（ ）
A．降水量 B．植被覆盖率
C．人口数量 D．地貌形态
【答案】
【1】D
【2】A
【解析】
试题分析：
【1】从图示信息可知，该流域多年年平均降水量约1500mm，冬季水库泥沙沉积厚度相对数低于夏季，说明该流域冬季降水少于夏季。温带海洋性气候全年降水均匀，A错。热带沙漠气候和温带大陆性气候年降水量少，不可能达到1500mm， B、C错。热带季风气候年降水量多，且冬季降水少于夏季，D对。
【2】图示信息反映出水库泥沙沉积厚度夏季大于冬季。结合前面分析，夏季降水量大于冬季，夏季流水侵蚀能力强，携带进入水库的泥沙较多，沉积较厚。冬季降水少，径流量小，携带入水库的泥沙少，沉积相对较浅，A对。植被覆盖率、人口数量、地貌形态有影响，但不是季节变化的主要因素，B、C、D错。
【题目】阅读理解。
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Day school Program Secondary students across Toronto District School Board(TDSB) are invited to take one or two e-Learning courses on their day school timetable. Students will remain on the roll at their day school. The on-line classroom provides an innovative relevant and interactive Learning environment. The courses and on-line classroom are provided by the Ministry of Education These on-line courses
Benefits of e-Learning Include:
Is e-Learning for You? Students who are successful in on-line course are usually;
Students need to spend at least as much time with their on-line course work as they would in a face-to-face classroom course. |
【1】E-Learning courses are different from other TDSB courses in that .
A. they are given by best TDSB teachers.
B. they are not on the day school timetable.
C. they are not included on students’ reports.
D. they are an addition to TDSB courses.
【2】What do students need to do before completing e-learning courses?
A. To learn information technology on-line.
B. To do their assignments independently.
C. To update their mobile devices regularly.
D. To talk face to face with their teachers.
