题目内容
【题目】下图为北半球中纬度某地某日5次观测到的近地面气温垂直分布示意图。当日天气晴朗,日出时间为5时。读图回答下题。
【1】
A. 5时、20时大气较稳定
B. 12时、15时出现逆温现象
C. 大气热量直接来自太阳辐射
D. 气温日较差自下而上增大
【2】
A. 日落时间为17时
B. 与海口相比白昼较长
C. 正午地物影子年内最长
D. 正午太阳位于正北方向
【答案】
【1】A
【2】B
【解析】试题分析:
【1】根据大气的主要的直接热源是地面辐射,C错。一天中最低气温在日出前后,最高气温在14时左右。读图,结合图中曲线,越靠近地面,气温日较差越大,D错。图中12时、15时的气温垂直变化规律是递减,下面热,上面冷,不易发生逆温现象,B错。5时、20时气温下面冷,上面暖,大气较稳定,A对。
【2】当日该地是5时日出,日出与日落时间关于中午12时对称,该地日落时间应该是19时,A错。该地位于北半球,昼长为14小时,说明此时北半球是夏季。北半球纬度越高,昼越长,当地在中纬度,海口纬度是20°N,在低纬度,所以比海口市的白昼要长,B对。夏季,物影较短,C错。正午太阳位于正南方向,D错。
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【题目】阅读理解。
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.