由命题“存在x∈R，使e|x-1|-m≤0”是假命题，得m的取值范围是（-∞，a），则实数a的值是（ ）。
一水平抛出的小球落到一倾角为θ的斜面上时，其速度方向与斜面垂直，运动轨迹如图中虚线所示。小球在竖直方向下落的距离与在水平方向通过的距离之比为
A.tanθ
B.2tanθ
C.
D.
根据下面的英文提示所提供的情景，请你帮助李明出主意，写出你解决问题的想法。词数不少于50。
On the morning of June 7, Li Ming is taking a bus on his way to take the entrance examination. Unfortunately, he is caught in a traffic jam because of an accident. How can he manage to get there in time? Please think out two or three different ways for him.
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