在物理学里，我们把物体位置的变化叫机械运南充到成都的路线长大_爱下问搜题

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问题填空题

在物理学里，我们把物体位置的变化叫机械运南充到成都的路线长大约 210km，动车运动的时间大约1.5h，则动车的平均速度大约是 140km/h．

答案

机械运动，140

机械运动的定义：物体位置的改变叫做机械运动；已知路程和时间，用速度公式v=s/t可求速度．宏观物体的运动：物理学里把物体位置的变化称为机械运动；v=s/t=210km/1.5h=140km/h．

单项选择题

生姜泻心汤方与半夏泻心汤方的不同点是（）

A.半夏泻心汤加生姜去半夏

B.半夏泻心汤加生姜减半夏量

C.半夏泻心汤加生姜去干姜

D.半夏泻心汤加生姜减干姜量

E.半夏泻心汤加生姜去炙甘草

完形填空

阅读下面短文，掌握其大意，从每题所给的A、B、C、D四个选项中，选出最佳选项，并在答题卡上将该项涂黑。
Every fast-food employee knows that the drive-through window is the worst position. The window sticks with constant ice; the roar of engines hurts your     ; your words are lost in the howling wind.
On a        afternoon, everything changed.
Every once in a while, the sub-zero temperatures seal a        windows shut. Drivers don’t exactly enjoy having to stand outside in the cold,       their orders into a speaker box, when they expect to drive through on their heated leather seats. In such cases, most customers tend to show their annoyance to the employees.
This woman was       .
“I’ll get the next car’s        as well,” she said as she came up to the window to pay. She stood outside,        much snow on her hair. Though she was obviously freezing, her bright        lit up her face like a fire.
“You can’t        their drinks,” I said, confused and tired.
“No, but I’ll buy them,” she said. “Pay it forward and all that.”
Completely puzzled, I charged her as       , and when the next customer arrived at the window I explained what had just happened. I watched as his         changed — first angry to be out in the cold, then        at the random act of kindness, and finally, delighted by his     .
“I suppose I’ll pay for the next order then,” he replied, nodding and waving at the impatient driver       him. He        over the cash and received his pre-paid hot drink.
The trend continued. Customers arrived annoyed, only to leave        and pleased. Some were shocked to spend much more than they had expected,        others ended up receiving their order for less than half the price.
Five vehicles passed, then ten, then twenty. No one refused to pay. Customers stood at my window          a fist-full of change to buy drinks for a complete stranger. Cars drove off, honking (鸣笛) and          their thanks.
It only takes one customer, one person, to change the entire        of traffic. It only takes one moment, one smile, to warm up even the coldest of days.

B．vehicle’s

D．disappointed

C．introducing