精英家教网 > 高中英语 > 题目详情

Todaywe’ll discuss a number of cases ________ beginners of learning English fail to use the language properly.

Awhich? Bas

Cwhy Dwhere

 

【答案】

【解析】D

解析 此句中cases表示情况,这里where相当于in which,在从句中作状语。当先行词为casestagepoint等,且从句中不缺主要成分时,常用where引导定语从句,在句中作状语。

 

练习册系列答案
相关习题

科目:高中英语 来源: 题型:阅读理解

This is a story  that happened 15 years ago but it has always stayed with me since then.On the way back from work every evening,more often than not there would be a homeless man standing at the exit of the freeway.He always waved at every car,he was always happy and smiling and sometimes almost dancing.Every day after work when I got there,I would quickly roll down my window and give him the coins.Occasionally the red light would be on for a minute and we would ask each other about our day.His answer would always be the same,“I’m blessed!”.

It amazed me that even in his situation of being homeless he was so positive,and his answer would remind me of how blessed I was.A single mother of four amazing kids,with a place to call home and with a job to provide for my kids.Then one day I was called into my boss’s office and was told that I was being laid off due to the economy.Needless to say that on my was home that day I was very sad and upset.I didn’t remember to look for my spare change and keep it ready like I usually did.I wasn’t feeling the joy as I got off the ramp where the homeless man would be.Yet there he was as alway,as l turned the ramp.He set his eyes on me,while still smiling and waving at others.

While I was waiting for the red light to turn,he strolled over to my car.He had a big smile he looked me straight in the eyes and said “today I will give you a dollar”.He then reached into his pocket and pulled out a dollar bill.I was blown away.I burst into tears.I wanted to jump out of my car and hug him!

You see that day he gave me more than a dollar bill,he taught me a valuable lesson.No matter  what material things are taken  from you,no one can take away your choice to be joyful.

What is the passage mainly concerned?

A.A dollar bill from a homeless person.

B.A blessing coming from a homeless person.

C.A woman who lost her job due to the economy.

D.A homeless man standing at the exit of the freeway.

From the lst paragraph,we know the homeless man is         .

A.optimistic        B.brave         C.Iazy          D.kind-hearted

After leaving the boss’s office,the author         .

A.felt relaxed to get rid of the tiring job

B.still felt joyful when coming off the ramp

C.took it for granted that she was fit for her job

D.didn’t put some change aside to give to the man

The underlined phrase“blown away”in the 3rd paragraph most probably  means

         .

A.completely defeated               B.wholly blown down

C.really amazed                         D.murdered by gunfire

It can be inferred from the passage that         .

A.material things are the most important in life

B.people should be encouraged to beg by smiling

C.the author’s ride home that dog was smooth sailing

D.we should wait others’help when faced with challenges

查看答案和解析>>

科目:高中英语 来源: 题型:阅读理解

In 1939 two brothers, Mac and Dick McDonald, started a drive-in restaurant in San Bernadino, California. They carefully chose a busy corner for their location. They had run their own businesses for years, first a theater, then a barbecue(烤肉) restaurant, then another drive-in. But in their new operation, they offered a new, shortened menu: French fries, hamburgers, and sodas. To this small selection they added one new idea: quick service, no waiters or waitresses, and no tips.

Their hamburgers sold for fifteen cents. Cheese was another four cents. Their French fries and hamburgers had a remarkable uniformity(一致性), for the brothers had developed a strict routine(程序) for the preparation of their food, and they insisted on their cooks’ sticking to their routine. Their new drive-in became surprisingly popular, particularly for lunch. People drove up by the hundreds during the busy noontime. The self-service restaurant was so popular that the brothers had allowed ten copies of their restaurant to be opened. They were content with this modest success until they met Ray Kroc.

Kroc was a salesman who met the McDonald brothers in 1954, when he was selling milkshake-mixing machines. He quickly saw the special attraction of the brothers’ fast-food restaurants and bought the right to franchise(特许经营) other copies of their restaurants. The agreement included the right to duplicate(复制) the menu, the equipment, even their red and white buildings with the golden arches(拱门).

Today McDonald’s is really a household name. In 1976, McDonald’s had over $ l billion in total sales. Its first twenty-two years is one of the most surprising success stories in modern American business history.

This passage mainly talks about _______.

A. the development of fast food services

B. how McDonald’s became a billion-dollar business

C. the business careers of Mac and Dick McDonald

D. Ray Kroc’s business talent

Mac and Dick managed all of the following businesses except _______.

A. a drive-in                               B. a theater

C. a cinema                                D. a barbecue restaurant

We may infer from this passage that _______.

A. Mac and Dick McDonald never became wealthy for they sold their idea to Kroc.

B. the place the McDonalds chose was the only source of the great popularity of their drive-in

C. forty years ago there were lots of fast-food restaurants

D. Ray Kroc was a good businessman

The passage suggests that _______.

A. creativity is an important element of business success

B. Ray Kroc was the close partner of the McDonald brothers

C. Mac and Dick McDonald became broken after they sold their ideas to Ray Kroc

D. California is the best place to go into business

查看答案和解析>>

科目:高中英语 来源:甘肃省天水市三中2009--2010学年度高二下学期第一次月考 题型:阅读理解


D
   A rainforest is an area covered by tall trees with the total high rainfall spreading quite equally through the year and the temperature rarely dipping below l6℃. Rainforests have a great effect on the world environment because they can take in heat from the sun and adjust the climate. Without the forest cover,these areas would reflect more heat into the atmosphere,warming the rest of the world. Losing the rainforests may also influence wind and rainfall patterns,potentially causing certain natural disasters all over the world.
In the past hundred years,humans have begun destroying rainforests in search of three major resources(资源):land for crops,wood for paper and other products,land for raising farm animals. This action affects the environment as a whole. For example,a lot of carbon dioxide(二氧化碳)in the air comes from burning the rainforests. People obviously have a need for the resources we gain from cutting trees but we will suffer much more than we will benefit.
       There are two main reasons for this. Firstly,when people cut down trees,generally they can only use the land for a year or two. Secondly,cutting large sections of rainforests may provide a good supply of wood right now,but in the long run it actually reduces the world’s wood supply.
   Rainforests are often called the world’s drug store. More than 25% of the medicines we use today come from plants in rainforests. However,fewer than l% of rainforest plants have been examined for their medical value. It is extremely likely that our best chance to cure diseases lies somewhere in the world’s shrinking rainforests.
57. Rainforests can help to adjust the climate because they_____________
       A. reflect more heat into the atmosphere
B. bring about high rainfall throughout the world
       C. rarely cause the temperature to drop lower than l6℃
       D. reduce the effect of heat from the sun on the earth
58. What does the word “this” underlined in the third paragraph refer to?
       A. We will lose much more than we can gain.
B. Humans have begun destroying rainforests.
       C. People have a strong desire for resources.
       D. Much carbon dioxide comes from burning rainforests.
59. It can be inferred from the text that          .
       A. we can get enough resources without rainforests
    B. there is great medicine potential in rainforests
       C. we will grow fewer kinds of crops in the gained land
       D. the level of annual rainfall affects wind patterns
60. What might be the best title for the text?
       A. How to Save Rainforests         B. How to Protect Nature
    C. Rainforests and the Environment    D. Rainforests and Medical Development

查看答案和解析>>

科目:高中英语 来源:2010年上海市高三下学期第一次模拟考试(英语 题型:其他题

Directions: Read the following text and choose the most suitable heading from A – F for each paragraph. There is one extra heading which you do not need.

A.Human efforts to prevent disastrous collisions

B.Recent alarms of asteroid(小行星) strikes.

C.Asteroids’ movement around the sun.

D.Asteroid strikes against Earth.

E.Past disastrous asteroid strikes.

F.The cause of asteroid strikes.

76._________________

Astronomers estimate that there are about l,100 asteroids--or space rocks--with the potential to cause a planet-wide disaster in a collision with Earth.And since large asteroids have collided with Earth many times in the past,scientists say it is certain that Earth will be hit again.It is only a question of when. 

77. _________________

The asteroid that ended the age of the dinosaurs hit the Earth 65 million years ago.It was at least six miles(10 kilometers)wide.But smaller asteroids can also devastate (毁坏)the earth.Scientists estimate that a collision with an asteroid even one—tenth this size would kill at least 25 per cent of Earth’s population.Less than a hundred years ago,for example,an asteroid only 330 feet(100 meters)wide exploded in Siberia.It completely destroyed half a million acres of forest.

78._________________

Asteroids come from a belt of tens of thousands of space rocks in orbit around the sun.They normally travel between Mars and Jupiter,but some smaller rocks are affected by the gravitational pull of Mars,Jupiter or Saturn and their orbits are stretched.Sometimes this change puts them on a path that crosses Earth’s orbit.This sets up the possibility of collision with Earth.

79._________________

In l986,a potentially dangerous asteroid missed Earth by only six hours.Scientists only found out about the danger after it had passed.Many more asteroids have collided with Earth over the years.We can still see their marks today — large craters in the ground.

80._________________

NOW there is a new--found seriousness about asteroid strikes.Astronomers are engaged in a painstaking search for all asteroids that threaten Earth.And the United States has a project called NEAR that involves orbiting and studying the asteroid Eros,the second largest asteroid near Earth.Studying the composition of the asteroid provides important information hat may allow an asteroid to be exploded or knocked of course to prevent it from colliding with Earth.

 

查看答案和解析>>

科目:高中英语 来源:2009年高考试题(安徽卷)解析版 题型:阅读理解

 

A rainforest is an area covered by tall trees with the total high rainfall spreading quite equally through the year and the temperature rarely dipping below l6℃. Rainforests have a great effect on the world environment because they can take in heat from the sun and adjust the climate. Without the forest cover,these areas would reflect more heat into the atmosphere,warming the rest of the world. Losing the rainforests may also influence wind and rainfall patterns,potentially causing certain natural disasters all over the world.

In the past hundred years,humans have begun destroying rainforests in search of three major resources(资源):land for crops,wood for paper and other products,land for raising farm animals. This action affects the environment as a whole. For example,a lot of carbon dioxide(二氧化碳)in the air comes from burning the rainforests. People obviously have a need for the resources we gain from cutting trees but we will suffer much more than we will benefit.

There are two main reasons for this. Firstly,when people cut down trees,generally they can only use the land for a year or two. Secondly,cutting large sections of rainforests may provide a good supply of wood right now,but in the long run it actually reduces the world’s wood supply.

Rainforests are often called the world’s drug store. More than 25% of the medicines we use today come from plants in rainforests. However,fewer than l%of rainforest plants have been examined for their medical value. It is extremely likely that our best chance to cure diseases lies somewhere in the world’s shrinking rainforests.

1.Rainforests can help to adjust the climate because they                .

A. reflect more heat into the atmosphere

B. bring about high rainfall throughout the world

C. rarely cause the temperature to drop lower than l6℃

D. reduce the effect of heat from the sun on the earth

2.What does the word “this” underlined in the third paragraph refer to?

A. We will lose much more than we can gain.

B. Humans have begun destroying rainforests.

C. People have a strong desire for resources.

D. Much carbon dioxide comes from burning rainforests.

3.It can be inferred from the text that

A. we can get enough resources without rainforests

B. there is great medicine potential in rainforests

C. we will grow fewer kinds of crops in the gained land

D. the level of annual rainfall affects wind patterns

4.What might be the best title for the text?

A. How to Save Rainforests

B. How to Protect Nature

C. Rainforests and the Environment

D. Rainforests and Medical Development

 

查看答案和解析>>

同步练习册答案