校本研究的核心要素是（），教师集体，专业研究人员三者的整合。_爱下问搜题

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问题填空题

校本研究的核心要素是（），教师集体，专业研究人员三者的整合。

答案

参考答案：教师个人

选择题

如图所示，是演示动能和势能转化的实验装置。小球从轨道上的A点滚落下来，在圆形轨道上运动了一周，最后经过D点被抛出去，在整个过程中，小球的动能最大的位置是

A.A点

B.B点

C.C点

D.D点

单项选择题

B

It keeps your insides from falling out. It helps you warm up when you are cold, and it can cool you off when you are hot. It lets you feel things by touch.
What is this Your skin, of course! What does your skin ask for in return for all the wonderful things it does Just a little care! So let’s learn how to take good care of our skin.
Like the heart and stomach, your skin is an organ(器官). In fact, it is the largest organ in your body. Unless there’s a problem, you may not think about your skin very much. But skin has an important job to do.
Your skin is protecting you. Your skin keeps you from getting sick. When you take care of your skin, you are helping your skin do its job. Taking care of your skin today will help you have no problems in the future.
Clean skin is happy skin! One simple way to take care of your skin is to keep it clean. Keeping your hands clean is very important. When washing your hands, use warm water. Wet your hands, and then use soap. You should wash your hands carefully everywhere.
You’ll also want to use warm water, but not too hot, when you take a bath. Use soap to clean your body. Don’t forget under your arms and behind your ears! Your face needs attention, too. It’s a good idea to wash your face once or twice a day with warm water.

Which of the following best describes your clean skin ( )

A．A kind of job to keep you from getting sick.

B．An important and largest organ.

C．Something like your heart and stomach.

D．Healthy and happy skin.