Look, dark clouds are gathering. It is_______...

Look, dark clouds are gathering. It is________ to rain soon.

A. probably 　 B. possibly

C. likely　　　　 D. perhaps

高三英语单项填空中等难度题查看答案及解析

Parts of Africa are covered by a dark cloud. But this is no rain cloud. It is a living cloud made of billions of locusts(蝗虫) that are traveling across the continent eating everything in their path.

And now in the battle to stop this disaster, a radio station in Senegal, West Africa, is offering listeners 50 kilograms of locusts. “We think this idea will get more people to take part in the war on the locusts.” said Abdoulaye Ba, from Sud-Fm, a radio station in one of Senegal’s worst affected area.

This is West Africa’s biggest locust disaster in 15 years, and it is moving east, causing huge damage to crops. As they move they produce young and increase their number and will soon threaten Sudan in the northeast of Africa. Some say it could reach Asia.

Experts say the harmful effect on crops in areas already suffering from food shortage and war could cast many people to go hungry. Governments in the areas are not well equipped to fight the pest.

Although leaders of 12 countries have agreed on a plan, it is not expected to be enough. “We are now treating 6,000 hectares per day with pesticide(杀虫剂), but we need to treat 20,000 hectares per day in order to have any hope of controlling this disaster,” said Mohamed Adballahi Ould Babah, director of locust control in Mauritania.

Requests are being made for international aid, which is the only way to limit the disaster, the UN’s Food and Agriculture Organization warned.

1.By using “dark cloud” to describe locusts in the first paragraph, the author mainly meant to______.

A. show the size, speed and damage of the mass of locusts

B. suggest the high speed that locusts travel at

C. warn that locusts would sweep the continent severely

D. hint that they look like dark monster

2.The story is mainly about______.

A. West Africa’s united effort in fighting a disaster

B. the difficulty in controlling locusts

C. the great damage locusts caused to West Africa

D. a struggle to fight against a disaster brought by locusts in West Africa

3.According to the text we learn that the locust disaster______.

A. can be even more serious in Asia

B. is then out of control

C. has affected greatly most areas

D. cannot be stopped unless twice as much pesticide is provided for the affected areas

4.Which of the following is WRONG？

A. Sud-Fm offered a reward for fighting locusts so that more people would join in the effort.

B. Senegal is to southwest of Sudan.

C. The locusts can cause such damage mainly because it has no natural enemy in West Africa.

D. 12 countries affected by locusts have untied but still lack pesticide.

高三英语阅读理解困难题查看答案及解析

Clouds are gathering, I think we’d better ______for the hotel in case it ______to rain.

A. to head; starts    B. head; starts       C. heading; start     D. heads; start

高三英语单项填空困难题查看答案及解析

---- Look at these black clouds . It _______ soon

---- Sure. If only we ________ out.

A .is raining, didn’t e                 B. is to rain, won’t start..

C. will rain, haven’t started               D. is going to rain, hadn’t e

高三英语单项填空简单题查看答案及解析

--Look at the black clouds. It ________ soon.

--Sure. How I wish we ________ out!

A. is raining...didn’t come        B. is to rain...won’t start

C. will rain...haven’t started     D. is going to rain...hadn’t come

高三英语单项填空简单题查看答案及解析

--- I’m afraid it’s going to rain this afternoon.

--- ______ Look at the dark and cloudy sky.

A．Not really.         B．Is it?              C．Why not?         D．I guess so.

高三英语单项填空简单题查看答案及解析

(2013·江苏苏中三市一模)—I'm afraid it's going to rain this afternoon.

—________ Look at the dark and cloudy sky.

A．Not really.      B．Is it?

C．Why not?      D．I guess so.

高三英语单项填空中等难度题查看答案及解析

A dark cloud is a _______of rain.

高三英语单项填空中等难度题查看答案及解析

As rain begins to fall from the clouds, it is very pure. However, as it falls through the air it dissolves some of the gases in the air ,It also collects bits of dust and microbes(微生物)that are floating in the air, When the rain reaches the ground it begins to pick up more dust and dirt, Many kinds of mineral substances dissolve in the water ,Sand and nud cannot dissolve in water.

Since water is so important to us, it is very important that the water we use should be clean , Otherwise, we might get some of the diseases that are carried by water Many microbes are harmful ,They are so small that we cannot see them ,These microbes must be removed or killed before the water is not clean, people who drink this water may get these diseases, Thus , to provide people with clean water, the government purifies the water.

Purification is a long process and consists of three stages: storing ,purifying and distributing ,The first stage is storing , Man-made lakes called reservoirs are used for this purpose ,Water from the rains ,other lakes, streams and rivers is collected in the reservoirs ,This water is usually dirty and muddy.

In the second stage shich is purifying , water from the reservoirs is filtered in a special pond, Stones, sand and other unwanted tiny things are caught in it, After that, tiny microbes are still present in the water ,These microbes are removed by “airing ”the water and by adding a chemical substance called chloring(氯)to the water ,This kills all the microbes in the water ,A fter this the water can be safely used for drinking.

The third stage is the distribution of the purified water to homes ,hospitals, offices ,factories and other places, This is done through a network of pipes of various sizes, These pipes must be make of a suitable material.

1.From Paragraph 1, we can learn that ________

A、Rain has contained gases when it forms in the clouds

B、Dust and microbes are dissolved in rain when rain falls on the ground

C、The closer rain is to the ground, the more impure things it contains

D、Sand and mud are things rain collects when it falls through the air

2.According to Paragraph 2 ,the following statements are wrong except that ________

A、All the microbes in water are harmful so water must be purified

B、some diseases can spread through drinking water if it is not clean

C、Water is safe to drink if only harmful microbes are removed from it

D、it is the govrnment’s responsibility to make drinking water clean

3.What can we know about man-made lakes?

A、It is used through the whole process of purification

B、Only rain water can be collected and stored in it

C、Water collected can be stored and filtered in it

D、Water from them contains a lot of impure substances

4.What is the function of the chemical substance chlorine?

A、to air the water            B、to catch tiny things

C、to kill microbes             D、to remove harmful gases

5.What is probably this passage?

A、A news report     B、A book review     C、A magazine article       D、A school paper

高三英语阅读理解中等难度题查看答案及解析

— Hurry up, I think it’s going to rain.

— ______ . The skies are dark and cloudy.

A. Not really.             B. I guess so.              C. Why not?       D. How great!

高三英语单项填空中等难度题查看答案及解析