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(本小题共12分)已知数列 的前n项和 ,其中 是首1,公差为2的等差数列, (1)求数列 的通项公式; (2)若 ,求数列 的前n项和
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【多选题】知觉的基本特征主要包括()
A.
知觉的选择性
B.
知觉的理解性
C.
知觉的整体性
D.
知觉的恒常性
E.
知觉的适应性
【简答题】用所给单词的适当形式填空. 1. There are many _____ (rule)  in our school. 2. You should _____ (wash)  your hands before meals. 3. Don't talk _____ (loud) here. 4. Shall we _____ (meet)  at the school gate (门口)? 5....
【单选题】网上间接调查法把包括()。
A.
利用搜索引擎
B.
利用公告栏
C.
用新闻组
D.
以上都是
【简答题】练习册p67 It's hard to make friends if you stay at home alone all the time. Taking part in all kinds of activities will help you 1 friends with other people. It's easier to make friends when you have 2 i...
【单选题】佛教四大名山中,( )是我国惟一兼有汉地佛教和藏传佛教道场的佛教圣地。
A.
五台山
B.
普陀山
C.
峨眉山
D.
九华山
【简答题】用单词的适当形式填空。 1. What does your father often____(do) on Sunday? 2. Don't talk. They____(do) their homework. 3. There (be)lots of pictures on the wall in our classroom. 4.-Where are you? -I___ (lie)in th...
【简答题】根据句意及汉语提示完成下列句子。 1. There are ________ (太多) things in her room. 2. Don't talk ________ (大声地) in the reading room. 3. He often helps her mother ________ (洗) clothes on Sundays. 4. ________ (后来) she kne...
【多选题】知觉的基本特征主要是指知觉的()
A.
选择性
B.
理解性
C.
整体性
D.
恒常性
【判断题】影响个体知觉的因素主要包括两个方面:知觉者的特征、知觉对象的特征( )
A.
正确
B.
错误
【简答题】根据汉语提示写出正确的单词. 1. There are some (儿童)in the park. 2. Don't talk (高声)in the library. 3. When (别的)did you meet her? 4. I enjoy (洗)clothes at home. 5. (打架)is wrong(错)for us.
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