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一个“十”字底下加一横是什么数学符号
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2亿+学生的选择
正负号 比如说±5的绝对值为5就是5前面的这个±
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正负数的符号
正负号，表示为这个数正数和负数都可以。
± 表示正或负　　如|a|=2（绝对值） a是±2
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求两边弯中间横的符号,就是一个横着的括号形状就是两边这种符号.╰ ╯,这个是下边的上边的是╭ ╮,中间空白部分就是横线,我要整个连的来的,
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扫描下载二维码短文改错 此题要求改正所给短文中的错误.对标有题号的每一行做出判断:如无错误.在该行右边横线上画一个勾(T),如有错误.则按下列情况改正: 该行多一个词:把多余的词用斜线(＼)划掉.在该行右边横线上写出该词.并也用斜线划掉.该行缺一个词,在缺词处加一个漏字符号(∧).在该行右边横线写出该加的词.该行错一个词:在错的词下画一横线.在该行右边横线上写出改正 题目和参考答案——精英家教网——
暑假天气热？在家里学北京名师课程，
& 题目详情
　　此题要求改正所给短文中的错误.对标有题号的每一行做出判断：如无错误，在该行右边横线上画一个勾（T）；如有错误（每行只有一个错误），则按下列情况改正：
　　该行多一个词：把多余的词用斜线（＼）划掉，在该行右边横线上写出该词，并也用斜线划掉.该行缺一个词；在缺词处加一个漏字符号（∧），在该行右边横线写出该加的词.该行错一个词：在错的词下画一横线，在该行右边横线上写出改正后的词.
　　注意：原行没有错的不要改.
　　The Yellow River, China' s second larger river was the most
（1）_______
polluted one among the nation's seven major rivers during the first
（2）_______
half of the year. The latest monthly report shown the water quality
（3）_______
in the Yellow River improved in July and the branch water quality was still poor.
（4）_______
　　One of the major reasons for the seriously pollution in the river
（5）_______
is the reduction of water flow and it is in the lowest level in fifty
（6）_______
years. The 5,464-kilometre Yellow River run from Qinghai and Tibet
（7）_______
winds through many places before reaching to the Bohai Sea. The river
（8）_______
provides water twelve per cent of the population of our country and
（9）_______
irrigate twelve per cent of our farmland. So we should take good care
（10）_______
of our“mother river”.
答案：略解析：
(1)& larger→largest
表示三个以上形容词要用最高级, 表示“第二大”要用second
(3)& shown→showed
这是一个含有并列的宾语从句的主从复合句，show表示“表明”为主句谓语，叙述全句用的过去时态，主句谓语动词应用过去式，故应把shown改为showed.
(4)& and→but
该宾语从句中前后两分句昕表示的是转折意义.
(5)& seriously→serious
seriously是副词，应改成形容词才能作定语修饰名词.
(6)& in→at
表示“在……平面”要用介词at，这是固定搭配.
(7)& run→running根据句型结构，Yellow River为主语，running from Qinghai and Tibet为后置定语，winds为谓语.
(8)& 去掉reaching后面的to
reach表示“到达”是及物动词，其后直接跟宾语
(9)& water后面加for provide
sb.with sth.或provide sth.for sb.表示“提供某人某物”是固定搭配)&
(10)& irrigate→irrigates
这是一个含有并歹谓语的简单句，主语river为第三人称单数，谓语动词一般现在时应在词尾加-s.
请在这里输入关键词：
科目：高中英语
来源：必修五学大课堂英语人教版 人教版
短文改错(共10小题)
此题要求改正所给短文中的错误。对标有题号的每一行作出判断：如无错误，在该行右边横线上画一个勾(√)；如错误(每行只有一个错误)，则按下列情况改正：
该行多一个词：把多余的词用斜线(＼)划掉，在该行右边横线上写出该词，并也用斜线划掉。
该行缺一个词：在缺词处加一个漏字符号(∧)，在该行右边横线上写出该加的词。
该行错一个词：在错的词下画一横线，在该行右边横线上写出改正后的词。
注意：原行没有错的有要改。
As we all know, Thanksgiving Day is holding on the fourth
1．_________
Thursday of November．It is a great festival in America, but it’s
2．_________
a time to give thanks for other’s love and help for Americans．
3．_________
In 1620, the first group of English people came to America by
4．_________
ships．But they didn’t have many to eat, and as a result, many
5．_________
of them died during their first winter in America．Lucky, the local
6．_________
people helped them grow food next year and played sports to
7．_________
celebrate a good harvest．Thus, Thanksgiving Day came into being．
8．_________
On the day, most American people went back home to be with
9．_________
their parents and grandparents．And family members get on together．
10．_________
科目：高中英语
来源：云南省玉溪一中学年高二上学期期末考试英语试题
此题要去改正所给短文中的错误。对标有题号的每一行做出判断；如无错误，再该行右边横线上画一个勾(√)；如有错误(每行只有一个错误)，则按下列情况改正：
此行多一个词：把多余的词用斜线(＼)划掉，在该行右边横线上写出该词，并也用斜线划掉。
此行缺一个词：在缺词除加一个漏字符号(∧)，在该行右边横线上写出该加的词。
此行错一个词：在错的词下划一横线，在该行右边横线上写出改正后的的词。
Dear Jane,
Last summer I take a part-time job in the International
1．________
Camp for children．I have been told one more worker
2．________
will be needed this year and I think you are fit it．How
3．________
about join us?The camp is at the foot of a small hill
4．________
close to a river．It is so a beautiful place!We can hear
5．________
birds singing happy all around．Everybody sleeps in
6．________
tents, that is very exciting．We usually work only five
7．________
hours a day, so we will have plenty of spare time visit the
8．________
area and have a fun．I am sure it will be an unforgettable
9．________
experience．If you have interests in it, reply to me soon．
10．________
科目：高中英语
来源：重庆市第八中学2011届高三第五次月考英语试题
此题要改正所给短文中的错误，对标有题号的每一行作出判断；如有错误(每行只有一个错误)，则按下列情况改正：
此行多一个词：把多余的词用斜线(／)划掉，在该行右边横线上写出该词，并也用斜线划掉。
此行缺一个词：在缺词处加一个漏字符号，在该行右边上写出该加的词。
此行错一个词：在错的词下划一横线，在改行右边横线上写出改正后的词。
When the boys reached home, it is seven o'clock．It was
1．________
dark．There was a light on inside the house, but the door was
2．________
open．They could see the man inside．“Who can it be?Father
3．________
has gone shopping．He won't be to home until eight o'clock．”
4．________
When the man saw Peter, he smiled and said cheerful,“Come in!
5．________
You don't know me, but I'm a friend of your father．”The woman
6．________
didn't see John．Peter went inside and began talked to the man,
7．________
and John ran away．He soon found a policeman, and was brought
8．________
him back to their home．The man was still there, while he saw the
9．________
policeman, he was frightening．The policeman caught him by the arm．
10．_______
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