高一下学期unit21bodylanguage内容摘要:
and then______ for a while. But what if one of your customers_______________________ with you? Do you still speak to her? Probably not. __________________, she has told you that she doesn’t want to talk to you. greet your customers talk avoids making eye contact By not looking at you Cloze test three Body language can help you decide______________ _____________________. If a person covers his or her mouth with his or her hand, or if he or she puts his or her finger over his or her mouth, he or she may be_______If the person you are talking to__________ ________________, this is also a sign that he or she may not be _______________. lying touches his is tellin。高一下学期unit21bodylanguage
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ons find friends open doors tear down walls express any emotion apologise greet someone ask for help start a conversation make ourselves feel happier and stronger when smiling in the mirror don’t
体中抽取一个容量为 n 的样本 , 要平均分成多少段 ,每段各有多少个号码。 答 要平均分成 n 段 , 如果 N 能被 n 整除 , 每段各有Nn个号码 ,如果 N 不能被 n 整除 , 可以从总体中随机地剔除几个个体 ,使得总体中剩余的个体数能被 n 整除 , 所以每段的个数为Nn的整数部分 . 问题 4 将含有 N 个个体的总体抽取容量为 n 的样本 , 平均分成Nn的整数部分段 ,
的概率为1N。 在整个抽样过程中各个个体被抽到的概率为nN。 ② 抽签有先后 , 但概率都是相同的 . 故 (1)16,( 2)15,(3)13. 小结 简单随机抽样的特点 : ( 1) 抽取的个体数较少。 ( 2) 逐个抽取。 (3) 是不放回抽取。 (4) 是等可能抽取 . 抽签法适用于总体中个体数较少的情况 , 随机数表法适用于总体中个体数较多的情况 . 本课时栏目开关 试一试 研一研
cause it rained. Practice • He cried ___________ the pain in his arm. • He cried ___________ he had a pain in his arm. • Do you like to learn English? No, I only do it _____ I _____. A. because, have
does it hurt? Drink plenty of water and get some rest. We are what we eat does the “fuel ” mean in the first paragraph? do we have to consider when we choose to buy or eat? made our eating habit
满载一船星辉 在星辉斑斓里放歌。 软泥上的青荇, 但我不能放歌, 油油的在水底招摇; 悄悄是别离的笙箫; 在康河的柔波里, 夏虫也为我沉默, 我甘心做一条水草。 沉默是今晚的康桥。 6 如果错过太阳时你流了泪,那 末你也要错过群星了。 —— 花开堪折直须折,莫待无花空折枝。 —— 亡羊补牢,为时未晚。 —— 胜不骄,败不馁。 18 你看不见你的真相,你所看见 的,只是你的影子。 ——