将质量均为M=1kg的编号依次为1，2，…6的梯形劈块靠在一起构成倾角α=37°的三角形劈面，每个梯形劈块上斜面长度均为L=0.2m，如图所示，质量m=1kg的小物块A与斜面间的动摩擦因数μ₁=0.5，斜面与地面的动摩擦因数均为μ₂=0.3，假定最大静摩擦力与滑动摩擦力相等．现使A从斜面底端以平行于斜面的初速度v₀=4.5m/s冲上斜面，下列说法正确的是（   ）

维护自尊是人的本能和天性，但应从实际需要出发，保持自尊的“弹性”。下列事例能体现这一要求的是（   ） 

如果你有5000元预算，你是买一块瑞士产的机械手表，还是买一块智能手表？很多人会选择瑞士手表，因为他们觉得瑞士手表是质量和品味的代名词，更是时尚和声望的象征。昂贵的价格，使得瑞士法郎（约合人民币1375亿元）。从文化生活角度看，这给我们的启示是（    ）

填一填。

大水淹了龙王庙——____②木匠带枷——____​

    Getting your children to study can be a little like getting them to eat their vegetables.

    ____ Make a study time and have it at the same time every day. This will help your kids to learn to schedule their day and will give them a sense of control over how they spend their time.

    Allow them to study in blocks of time, such as for half an hour with a five­minute break in the middle. ____ Ideal(理想的) study times are after dinner or right after school before dinner.

    Never allow your children to study in front of the television, for that will encourage passive activity. ____

    You'll also need to help your kids find the right place to study. After you've set up a good study time for little learners, set up a good place where they can get those creative juices flowing. ____ Make sure there is a table or a desk and a comfortable chair at this place.

    ____ This includes helping them out with their homework sometimes and being there for them with the answers to any questions. The input you give your children during study periods will help form a bond and help make studying enjoyable.

A. Pick a place where your children can study properly.

B. Hold them to the schedule they create for themselves.

C. Finally, spend time with your kids when they're studying.

D. Try to stop this bad habit by offering some sort of reward.

E. Keep the atmosphere light and offer lots of encouragement. too.

F. Instead, use TV as a treat or a reward when the homework is completed.

G. One of the best ways to form good study habits for your kids is to design a schedule that they keep to.