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【单选题】
质量为m的质点，在变力【图片】（【图片】和 k 均为常量）作用下沿ox轴作直线运动，若已知t = 0时，质点位置坐标【图片】，速度为【图片】，且力的方向和初速度方向一致，则质点的运动学方程为A.
B.
.
C.
.
D.
.
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举一反三
【单选题】___________? He did some reading at home. [ ]
A.
What does your father do yesterday evening
B.
What does your brother do in the school
C.
What did your brother do over the weekend
D.
Where did your brother go last Sunday
【单选题】以医学标准来判断心理活动正常与否是( )
A.
临床医师常用的方法
B.
一种不负责任的方法
C.
一种最为客观的方法
D.
取决于观察者的主观经验
E.
实际应用范围很广
【单选题】What did the team find out about honey badgers?
A.
There were some creatures they did not eat
B.
They were afraid of poisonous creatures.
C.
Female badgers did not mix with male badgers.
D.
They may get some of the water they needed from fruit.
【简答题】What did some suppliers offer on orders exceeding $15 000?A price reduction by ______.
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