问题
选择题
一物体沿直线运动时的速度—时间图象如图所示，则以下说法中正确的是（ ）
A．物体沿着直线向一个方向运动
B．物体沿直线往复运动
C．物体加速度最大的时刻为1s，3s，5s
D．物体加速度最大的时刻为0s，2s，4s，6s
答案
BD
搜题请搜索小程序“爱下问搜题”
一物体沿直线运动时的速度—时间图象如图所示，则以下说法中正确的是（ ）
A．物体沿着直线向一个方向运动
B．物体沿直线往复运动
C．物体加速度最大的时刻为1s，3s，5s
D．物体加速度最大的时刻为0s，2s，4s，6s
BD
阅读下面短文, 掌握其大意, 然后从1-10各题所给的四个选项（A、B、C和D）中, 选出最佳选项。 Have you ever heard the phrase, “Love is blind”? If so, you are already 1 with a type of mistake in our attempts to understand others: halo effects. This type of mistake 2 to the fact that once we form an overall impression of somebody, it could have strong effects on our 3 of his personality. 4 , halo effects are both common and powerful. For example, most organizations contain one or more “superstars”--- people who have earned the reputation for being unusually 5 and capable. Once they have gained such a “halo”, everything they do receives good 6 . Ideas that would be regarded as just so-so if suggested by someone else are seen as 7 when proposed by these persons. And actions that might be considered risky if taken by others are seen as brave when carried out by these “chosen” men and women. As you can see, halo effects carry high costs. They may lead some persons to have an 8 high opinion of their own worth, while making things 9 for others who are equally deserving. Further, by giving too much influence to persons who are not ready to receive it, and by preventing hidden talent from being 10 , they can harm organizations as well as individuals. Clearly, then, it is important to recognize the existence and impact of halo effects; only then can their harmful effects be avoided.
|