题目内容
根据短文内容,从下边的A—F选项中选出能概括每一段主题的最佳选项。选项中有一项为多余选项。
A . The different structure of blue holes.
B. Why scientists are interested in blue holes.
C. How a blue hole comes into being.
D. Blue holes exploring is becoming popular.
E. Rules to obey when diving into blue holes.
F. The general definition of a blue hole.
【小题1】______________
A blue hole is a flooded sea cave with a hole that opens up at the land's surface. These cave systems form in carbonate rock, often on islands. Some blue holes have very special rock formations and water chemistry. Far below sea level, they contain some of the harshest environments on Earth, with no oxygen and no light. Yet these areas are filled with life forms that have adapted to the extreme conditions.
【小题2】___________
Blue holes get their name from the color some have when seen from the air. The color is usually a reflection of the sky on the water. Blue holes are the result of erosion in which water breaks down rock. Rain falling thousands of years ago contained chemicals which slowly wore away at the limestone landmass. These holes later filled with sea water as the sea level changed. The rising and falling of sea levels and the mixture of salt and fresh water further wore away at these cave formations.
【小题3】 ____________
These flooded cave systems can be found in the ocean, or they can be found inland. Ocean caves are affected by tides, so they always have water movement. But blue holes on land are very still. They have several layers of water, chemicals, and bacteria. The top layer of fresh water comes from rainfall. This layer acts like a cap on top of the layered mixture, and keeps out oxygen from the atmosphere. The fresh water floats on a denser layer of saltwater. Underneath this is a layer of poisonous hydrogen sulfide, produced by bacteria living in the water. Underneath this layer is anoxic seawater -- water that does not contain any oxygen.
【小题4】___________
Information gathered from these blue holes is helping scientists to increase their understanding of biology, archaeology and geology. But exploring these blue hole environments brings danger as well as discovery. Scientists are interested in these caves because oxygen-free conditions there are similar to those on Earth long ago, before oxygen existed on our planet. But there are many difficulties involved in diving into blue holes.
【小题5】___________
One reason blue holes have not been fully explored is that they can be extremely dangerous. There are many safety rules that divers must follow to help ensure their survival. First, divers must have training and experience to swim in these caves. Divers who explore a cave for the first time must establish a thin rope called a guideline. This line helps them to safely enter and exit the cave without getting lost.
【小题1】F
【小题2】C
【小题3】A
【小题4】B
【小题5】E
解析试题分析:本文主要讲述的是blue hole如何形成,具体结构以及科学家对它产生兴趣的原因,最后还提及了人们在研究它的时候所要遵循的基本规则。
【小题1】F 根据本段第一句A blue hole is a flooded sea cave with a hole that opens up at the land's surface.可知本段主要介绍的是什么是blue hole,也就是blue hole的定义。故F正确。
【小题2】C 根据本段2,3,4行Blue holes are the result of erosion in which water breaks down rock. Rain falling thousands of years ago contained chemicals which slowly wore away at the limestone landmass. These holes later filled with sea water as the sea level changed.可知本段主要讲述的是blue hole是如何形成的,也就是分析它产生的原因。故C项正确。
【小题3】A 根据本段2,3,4,5行They have several layers of water, chemicals, and bacteria. The top layer of fresh water comes from rainfall. This layer acts like a cap on top of the layered mixture, and keeps out oxygen from the atmosphere. The fresh water floats on a denser layer of saltwater. Underneath this is a layer of poisonous hydrogen sulfide, produced by bacteria living in the water.可知主要讲述的blue hole的构造和不同的结构中的具体的组成。故A项正确。
【小题4】B 根据本段3,4行Scientists are interested in these caves because oxygen-free conditions there are similar to those on Earth long ago, before oxygen existed on our planet.可知本段主要解释科学家对于blue hole感兴趣的原因。故B正确。
【小题5】E 根据本段第2句There are many safety rules that divers must follow to help ensure their survival.可知本段主要讲述的是在探索blue hole的时候要遵循的安全规则。故E项正确。
考点:考察科普类短文阅读
根据短文内容, 从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。
Tips for Cooking on a Tight Schedule
From my experience , there are three main reasons why people don’t cook more often :ability , money , and time 【小题1】 .Money is a topic I’ll save for another day .So today I want to give you some wisdom about how to make the most of the time you spent in the kitchen .Here are three tips for great cooking on a tight schedule :
Think ahead .The moments when I think cooking is a pain are when I’m already hungry and there’s nothing ready to eat .So think ahead of the coming week .When will you have time to cook ?Do you have the right materials already ? 【小题2】 .
Make your time worth it .When you do find time to cook a meal , make the most of it and save yourself time later on .Are you making one loaf of bread ? 【小题3】 .It takes around the same amount of time to make more of something .So save yourself the effort for future meal .
【小题4】 This may surprise you , but one of the best tools for making cooking worth your time is experimentation .It gives you the chance to hit upon new ideas and recipes that can work well with your appetite and schedule. The more you learn and the more you try, the more ability you have to take control of your food and your schedule.
Hopefully that gives you a good start. 【小题5】_______ And don’t let a busy schedule discourage you from making some great changes in the way you eat and live!
| A.Try new things. |
| B.Ability is easily improved. |
| C.Make three or four instead. |
| D.Understand your food better. |
F. Let cooking and living simply be a joy rather than a burden.
G. A little time planning ahead can save a lot of work later on.
_ 【小题1】__ People use money to buy food, furniture, books, bicycles and hundreds of other things they need or want. When they work, they usually get paid in money.
Most of the money today is made of metal or paper. __【小题2】__ One of the first kinds of money was shells.
Shells were not the only things used as money. In China,cloth and knives were used. In the Philippine Islands,rice was used as money for a long time. Elephant tusks,monkey tails and salt were used as money in parts of Africa.
The first metal coins were made in China. They were round and had a square hole in the centre. __【小题3】__
Different countries have used different metals and designs for their money. __【小题4】__ Sweden and Russia used copper to make their money. Later some countries began to make coins of gold and silver.
But even gold and silver were inconvenient if you had to buy something expensive. Again the Chinese thought of a way to improve money. __【小题5】__ The first paper money looked more like a note from one person to another than the paper money used today.
Money has had an interesting history from the days of shell money until today.
| A.The first coins in England were made of tin(锡). |
| B.But people used to use all kinds of things as money. |
| C.No one knows for certain when people began to use money. |
| D.People strung(串连) them together and carried them from place to place. |
F. They began to use paper money.
G. Today anyone will accept money in exchange for goods and services.
根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。
Taking good notes is a time-saving skill that will help you to become a better student in several ways. 【小题1】 Second, your notes are excellent materials to refer to when you are studying for a test. Third, note-taking offers variety to your study time and helps you to hold your interest.
You will want to take notes during classroom discussions and while reading a textbook or doing research for a report. 【小题2】 Whenever or however you take notes, keep in mind that note note-taking is selective process. 【小题3】
The following methods may work best for you.
Read the text quickly to find the main facts and ideas in it.
Carefully read the text and watch for words that can show main points and supporting facts.
Write your notes in your own words.
【小题4】
Note any questions or ideas you may have about what was said or written.
As you take notes, you may want to use your own shorthand(速记). When you do, be sure you understand your symbols and that you use them all the time. 【小题5】
| A.Use words, not complete sentences. |
| B.There are three practical note-taking methods. |
| C.You must write your notes on separate paper. |
| D.Otherwise, you may not be able to read your notes later. |
F. That means you must first decide what is important enough to include in your notes.
G. First, the simple act of writing something down makes it easier for you to understand and remember it.
根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。
Hollywood movies are regularly filled with sex and violence. They can be exciting films but sometimes all you want is a little light-hearted entertainment.
Have you heard of Bollywood? All singing, all dancing and unrealistic, it is the perfect alternative to normal Hollywood movies. Bollywood is the Indian film industry, based in Mumbai, formerly known as Bombay. 【小题1】 Yet Bollywood is the largest producer of films in the world. This year the Indian Filmgare Awards, Bollywood's Oscars, turn 50 years old.
The typical Bollywood movie usually has the following ingredients: a cup of romance, a tea-spoon of comedy, a dash of international sight-seeing, served with a huge slice of singing and dancing. There will also be one brave hero, one beautiful heroine and one baddie. 【小题2】
Bollywood films are full of ideal things and free of daily worries. 【小题3】 The actors change clothes and locations within a single song. But the audience don't mind. To Indian movie lovers, especially the poor, such films are a gateway to heaven and the stars are their gods. The films take them to a magical world away from their everyday troubles. The films tell them the impossible is possible and that true love conquers all.
【小题4】 Behind the beautiful scenes, Bollywood still emphasizes traditional family values. In most films, if two lovers want to break an arranged marriage, they can't just run away. They must win over their parents.
Bollywood is a decent refreshing replacement for those over-stimulating Hollywood films. 【小题5】 They will take you to a brighter, cheerier and more colorful world, where it's still cool to dance around a tree and sing a love song.
| A.Bollywood has gradually won its reputation on the world stage. |
| B.There is never any mention of politics, poverty or war. |
| C.Most Chinese school kids have probably never seen an Indian film. |
| D.Bollywood films are mostly comic romances with light-hearted incidental music. |
F.The result is a fun-filled musical.
G.So if you're tired of all that Hollywood actions, check out the following Bollywood films.