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GMAT语法练习（1）

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1.Added to the increase in hourly wages requested last July， the railroad employees are now seeking an expandedprogram of retirement benefits.

（A）Added to the increase in hourly wages requested last Ju1y，the railroad employee are now seeking an expandedprogram of retirement benefits.

（B）Added to increase in hour1y wages which had been requested last July，the employees of the railroad are nowseeking an expanded program of retirement benefits.

（C）The railroad employees are now seeking an expanded program of retirement benefits added to the increase inhourly wages that were requested last July.

（D）In addition to the increase in hourly wages that were requested last July， the railroad employees retirementbenefits.

（E）In addition to the increase in hourly wages requested last July， the employees of the railroad are now seeking anexpanded program of retirement benefits.

2.Child prodigies are marked not so much by their skills but instead by the fact that these skills are fully developed at avery early age.

（A） but instead

（B） rather than

（C） than

（D） as

（E） so much as

3. The department defines a private passenger vehicle as one registered to an individual with a gross weight of less than8，000 pounds.

（A）as one registered to an individual with a gross weight of less than 8，000 pounds.

（B）to be one that is registered to an individual with a gross weight of less than 8，000 pounds.

（C）as one that is registered to an individual and that has a gross weight of less than 8，000 pounds.

（D）to have a gross weight less than8，000 pounds and being registered to an individual

（E）as having a gross weight of less than 8，000 pounds and registered to an individual

4.Urban officials want the census to be as accurate and complete as possible for the reason that the amount of low-income people in a given area affect the distribution of about fifty billion dollars a year in federal funds.

（A）for the reason that the amount of low-income people in a given area affect

（B）for the reason because the amount of low-income people in a given area effects

（C）in that the amount of low-income people in given areas effect

（D）because the number of low-income people in a given area area affects

（E）because the numbers of low-income people in given areas effects

5. After the Arab conquest of Egypt in A.D. 640，Arabic became the dominant language of the Egyptians， replacingolder languages and writing systems.

（A）became the dominant language of the Egyptians， replacing older languages

（B）became the dominant language of the Egyptians，replacing languages that were older

（C）becomes the dominant language of the Egyptians and it replaced older languages

（D）becomes the dominant language of the Egyptians and it replaced languages that were older （E）becomes the dominant language of the Egyptians，having replaced languages that were older

6.The use of gravity waves， which do not interact with matter in the way electromagnetic waves do， hopefully willenable astronomers to study the actual formation of black holes and neutron stars.

（A）in the way electromagnetic waves do，hopeful1y will enable

（B）in the wav electromagnetic waves do l wil1，it is hoped，enable

（C）like electromagnetic waves， hopefully will enable

（D）like electromagnetic waves， would enable，hopefully

（E）such as electromagnetic waves do， will， it is hoped， enable

7.If a single strain of plant is used for a given crop over a wide area， a practice fostered by modern seed-marketingmethods， it increases the likelihood that the impact of a single crop disease or pest will be disastrous.

（A）If a single strain of plant is used for a given crop over a wide area，a practice fostered by modern seed-marketingmethods，it

（B）If a single strain of plant is used for a given crop over a wide area， as is fostered by modern seed-marketingmethods， it

（C）A practice fostered by modern seed-marketing methods， a single strain of plant used for a given crop over a widearea

（D）A single strain of plant used for a given crop over a wide area， a practice fostered by modern seed-marketingmethods，

（E）The use of a single strain of plant for a given crop over a wide area， a practice fostered by modern seed-marketing methods，

8.A majority of the international journalists surveyed view nuclear power stations as unsafe at present but that theywil1，or could，be made sufficiently safe in the future.

（A）that they wil1，or could，

（B）that they would，or could，

（C）they will be or could，

（D）think that they will be or could

（E）think the power stations would or could

9. A controversial figure throughout most of his public life， the Black leader Marcus Garvey advocated that some Blacksreturn to Africa， the land that， to him， symbolized the possibility of freedom.

（A）that some Blacks return to Africa， the land that，to him， symbolized the possibility of freedom

（B）that some Blacks return to the African land symbolizing the possibility of freedom to him

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Python语法（1）.md

Python语法（1）.md

Python语法（1）.md

Python基础语法

安装新的包

管理员权限打开cmd

输⼊命令>>>conda install chardet

既可以安装chardet包。

第⼆章Python基础语法标识符第⼀个字符必须是字母表中的字母或者下划线⼤⼩写敏感。

其它组成部分为字母数字下划线

等号：

“=”含义为赋值，⽤来定义变量

Python保留字

注释：或 （code)

⾏与缩进

可⽤分号进⾏分割，但是推荐⽤⾏进⾏分割。

输⼊和输出：

Python提供了⼀个input()，可以让⽤户输⼊字符串，并存放到⼀个变量中。 ，

print()在括号中加上字符串，就可以向屏幕上输出指定⽂字。变量Python中的变量处需要声明。每个变量在使⽤前都必须赋值，变量赋值之后该变量才会被创建。在Python中个，变量就是变量，它没有类型，我们所说的类型是变量内存中对象的类型。

使⽤（=）进⾏赋值。

⾃增运算

e.g. >>> a = a+1

or >>> a+=1

运算符描述实例

=简单的赋值运算符

c= a+b 将a+b的结果赋值为cimport keyword

print(keyword.kwlist)

+=加法赋值运算b += a 等价于 b = b+a

-=减法赋值运算b -= a 等价于b = b-a

x=乘法赋值运算符b x= 等价于 b= bxa

/=除法赋值运算b /= a 等价于 b=b/a

%=取模赋值预算b=b%a

xx=幂赋值运算

//=取整除赋值运算符 运算符描述实例

多个变量赋值

分⽀主题

第三章 标准数据类型

使⽤ type(a)来查看变量类型。使⽤isinstance(3,int)查看3是否为整数，返回布尔值。

布尔值 True 和 False,其中0和空序列 为True

1.布尔值 booleans

布尔运算（and,or,not)

2.数字Numbers

整数int

⼩数float

注意，可以⽤int函数或者整除来将⼩数型的数据经过运算转化为整型数据。

第⼀个不同。

Java容器类练习题（一）

Java容器类练习题（一）

Java容器类练习题（⼀）

题⽬1:创建⼀个名为Gerbil的类，该类拥有⼀个整数域gerbilNumber，通过构造器初始化gerbilNumber。创建⽅法hop()显⽰该对象的

gerbilNumber，以及“is hopping.” 创建⼀个ArrayList，并将Gerbil对象添加到该List中。⽤get()⽅法遍历List中所有的Gerbil对象，并调⽤

hop()⽅法。

解答1：

import java.util.*;

class Gerbil{

private int gerbilNumber;

public Gerbil(int number){

gerbilNumber = number;

}

public void hop(){

System.out.println("Gerbil "+gerbilNumber+" is hopping.");

}

}

public class Exercise1{

public static void main(String[] args){

List gerbils = new ArrayList();

for(int i = 0; i < 5; i++){

gerbils.add(new Gerbil(i));

}

for(int i = 0; i < gerbils.size(); i++){

gerbils.get(i).hop();

}

}

}

/* output

Gerbil 0 is hopping.

Gerbil 1 is hopping.

Gerbil 2 is hopping.

Gerbil 3 is hopping.

Gerbil 4 is hopping.

*/

分析:

ArrayList对象被向上转型为List接⼝。在使⽤Java容器类时，⼤部分情况下只需要和接⼝打交道，只需要在创建容器类对象时指明对象类型。

List可以简单看作是具有⾃动扩容功能的数组。向List中添加新元素⽤add()⽅法，获取元素⽤get()⽅法。

【走向高考】（七省专用）2021高考英语 专项语法冲破（一）时态和语态 外研版(1)

【走向高考】（七省专用）2021高考英语 专项语法冲破（一）时态和语态 外研版(1)

专项语法冲破(一) 时态和语态

考纲解读

考点 考纲解读

现在时态 掌握一般现在时、现在完成时、现在完成进行时的用法，并能在真实语境中正确使用，掌握主动语态表达被动意义的情况

过去时态 掌握一般过去时、过去进行时、过去完成时的用法及其被动语态的运用

将来时态 掌握一般将来时、将来进行时、过去将来时的用法

命题分析

2021年高考对动词的时态和语态的考查有28道题，涉及10种时态，即：一样此刻时、一样过去时、一样以后时、此刻进行时、过去进行时、此刻完成进行时、过去以后时、此刻完成时、过去完成时、以后完成时，考查在具体的语境中对各类时态的利用。

知识归纳·方式点拨

一、考点知识归纳

考点一 动词的时态

1．几种大体时态

2.易混时态的区别

(1)一样此刻时与此刻进行时的区别  ①一般现在时用来说明客观事实或情况，或用于强调动作的永久性或反复性。②现在进行时强调动作正在进行，因此它不仅表示动作是暂时的即动作持续的时间是有限的，而且这种动作常含有未完成性。

[典题例如]

—Can you tell me the timetable of the school bus?

—Well, the bus ________ here for the campus at 7:00

a．m..(leave)

剖析：leaves “校车的时刻表”是规定好的情形，用一样此刻时。

(2)一样过去时与过去进行时的区别

 ①一般过去时表示动作的完成，即动作发生过，且已结束，着眼于结果。②过去进行时表示动作的未完成性、持续性，着眼于动作的过程。

[典题例如]

The manager was worried about the press conference his assistant ________ in his place but, luckily,

everything was going on smoothly.(give)

英语中“一…就…”的多种表达方式（高三英语语法）

英语中“一…就…”的多种表达方式（高三英语语法）

英语中“一…就…”的多种表达方式（高三英语语法）

英语中“一...就...” 的表达方式丰富多彩,现将其表达形式及用法总结如下：

1、 as soon as

as soon as 是最常见的表达方式，前一个as 是副词，后一个as

是连词，引导时间状语从句。注意：

⑴as soon as所指的动作发生在另一分句所指的动作之前。

如：He made a phone call to me as soon as he came back.他一回来就给我打了个电话（回家在前，打电话在之后）。

⑵as soon as引导的从句可以放在主句之前，也可放在主句之后。

如：As soon as he came back, he paid a visit to me. = He paid

a visit to me as soon as he came back.他一回来就来看我。

⑶as soon as 可用于一般现在时、一般过去时或完成时，主句的动词用现在时、过去时或将来时。

例如：We will go outing as soon as he returns. 他一回来，我们就去郊游。

He started as soon as he received the news. 他一得到消息就出发了。

As soon as I had got on the bus, my grandma said“good

goodbye”to me我一上车，外婆就向我说再见

2、when/whenever/just when

在一般人眼里，when这个词就是“…时候”，“在…时候”的意思，其实不然，它也有“一…就…”之意，作连词,常常和just连用。比如：

（1） He had just drifted off to sleep when the phone

rang.他刚睡着电话铃就响了。

（2） I had just finished the magazine when supper was