表示真实条件.客观真理.自然现象.定理定义 .民 间谚语等.句型是: If + 句子 .+ 主句 . 例: If you study hard ,you are sure to succeed . If you put ice in a warm place ,it turns into water . If a glass falls on the floor, it usually breaks If you cook a banana, it becomes very soft . If a plant don’t get enough light ,it grows very tall and thin. Unit 6 How long have you been collecting shells? 【查看更多】

 

题目列表(包括答案和解析)

填空

在数学中,________表示面积,________表示体积,      表示半径,________表示物体的高度。列方程解应用题,________这三个字母表示未知数。

查看答案和解析>>

用下面方框中所提供的信息,写出含有if非真实条件句的句子。

1.___________________

2.___________________

3.___________________

4.___________________

5.___________________

6.___________________

7.___________________

8.___________________

9.___________________

10.__________________

查看答案和解析>>

完形填空:

Save the Wild Tiger

  When people think of tigers, they think:strong and dangerous.

  But now, the big animal is calling for our help.

  There were once eight kinds of   1  in the world, but

  three died out during the 20th century.In the last 70 years, the   2   of Siberian tigers(东北虎)has gone from as many as 300 to   3   22 somewhere.The Siberian tiger has been   4   dying out completely.If the government doesn't make any efforts, it's quite   5   that there will be no more Siberian tigers in China in ten to twenty years.

  In order to double the number of wild tigers in the   6   ten years, the World Wildlife Fund(世界自然基金会)has started a program recently.It   7  save wild tigers and put an end to tiger hunting and killing.China, together with twelve other   8  , has joined in.

  Wild animals, such as red deer and wild pigs, are the main   9   of the tigers.The hunting of these animals is the greatest threat(威胁)to tigers.So the most important thing is   10   the animals that tigers eat.To protect the wild tigers, we need to call on more people to stop eating and hunting wild animals.

(1)

[  ]

A.

pigs

B.

tigers

C.

deer

(2)

[  ]

A.

name

B.

kind

C.

number

(3)

[  ]

A.

less than

B.

more than

C.

bigger than

(4)

[  ]

A.

in need of

B.

in danger of

C.

in front of

(5)

[  ]

A.

possible

B.

impossible

C.

necessary

(6)

[  ]

A.

last

B.

next

C.

past

(7)

[  ]

A.

aims to

B.

used to

C.

refuses to

(8)

[  ]

A.

cities

B.

provinces

C.

countries

(9)

[  ]

A.

friends

B.

food

C.

members

(10)

[  ]

A.

to sell

B.

to kill

C.

to save

查看答案和解析>>

It is raining hard. The guards are still standing in the rain.

[    ]

  A. 指人   B. 指物   C. 指事   D. 指自然现象

查看答案和解析>>

阅读理解

  Bamboo(竹子)is one of nature's(自然)most surprising plants.Many people call this plant a tree, but it is a kind of grass.

  Like other kinds of grass, a bamboo plant may be cut very low to the ground, but it will grow back very quickly.A Japanese scientist reported one bamboo plant which grew 1.5 metres(4 feet)in 24 hours! Bamboo grows almost everywhere in the world except Europe.There are more than 1, 000 kinds of bamboo.

  Not all bamboo looks the same.Some bamboo plants are very thin.They may only grow to be a few centimetres wide while others may grow to more than 30 centimetres(1 foot)across.This plant also comes in different colours, from yellow to black to green.

  Bamboo has been used to make many things such as hats and kitchen tools(厨房用具).Because it is strong, bamboo is also used to build buildings.

  Many Asian countries have used bamboo for hundreds of years.They often use bamboo for buildings and supporting(支撑)new buildings and bridges while they are being built.

  In Africa, poor farmers are taught how to find water using bamboo.These African countries need cheap way to find water because they have no money, and their fields often die from no rain and no water.Bamboo pipes(管子)help poor farmers bring water to their thirsty fields without spending a lot of money.

(1)

How is bamboo like grass?

[  ]

A.

It grows quickly.

B.

It's wood.

C.

it is easy to cut.

D.

It is very thin.

(2)

Though you can see bamboo everywhere, it doesn't grow _________.

[  ]

A.

in China

B.

in Europe

C.

on mountains

D.

in Africa

(3)

Why is bamboo used by African poor farmers? Because _________.

[  ]

A.

it is cheap

B.

it has different colours

C.

it is strong

D.

it has been used by Asians

(4)

Bamboo pipes can _________.

[  ]

A.

make money

B.

be trees

C.

grow quickly

D.

carry water

(5)

In Asia, bamboo has been used for _________.

[  ]

A.

a short time

B.

many thousands of years

C.

many hundreds of years

D.

about 100 years

查看答案和解析>>


同步练习册答案