下图为某地等高线图，读图回答小题。
在学生绘制的该地区地形剖面图中，地形起伏不明显。为了突出图中的地形起伏，绘图时应采用的做法是（）
A.比例尺不变，适当扩大图幅
B.水平比例尺不变，适当扩大垂直比例尺
C.比例尺不变，适当缩小图幅
D.垂直比例尺不变，适当扩大水平比例尺
参考答案：B
解析：
一般画地形剖面图时，水平比例尺与原地形图相同，垂直比例尺根据实际情况确定，垂直比例尺越大，纵坐标越长，反映的起伏状况越明显
考点：本题考查等高线地形图和地形剖面图的判断。
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| Tim was a 1 boy. He was not a very good student, and he did not like _2_ homework 3 he enjoyed doing other things in his free time. Usually, he did not do his homework and when he did it he always _4 a lot of mistakes. One day his math teacher 5 Tim's homework and saw that he got all his 6 right. He was very _7_ and rather (相当) _8_. He called Tim to his desk and said to 9 . "You got all your homework 10_ this time, Tim. _11_? Did your father help _12_?" Usually Tim's father helped him 13 his homework, but the evening before this, he had not been able to (能), because he _14_ at home that evening, so Tim answered, "No, sir, he was very busy last night, 15 I had to do it all by myself." | ||||
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