46、You can improve your health________.
A.relaxing and keeping cool
B.spending longer hours in activities
C.eating less and less during short periods of time
D.integrating physical activity into your timetable
47、People say that________.
A.they do not have time for physical activity
B.getting started into physical activity is not so difficult
C.getting started into physical activity is the most difficult part
D.they prefer keeping the present situation to doing any activities
48、根据下面内容,回答48-67题:
Only one animal can walk 200 miles without stopping once to rest. It would take a person two days and two nights to walk this far, and only one man has ever done it without stopping. What amazing animal has such endurance? The camel! The camel is well known for something else, too. It can cross an entire desert without a single drink of water. Its body is built in a special way to help it store water and food.
A person has just one stomach, but a camel has quite a few. Within each stomach are layers and layers of cells. These ceils are like tiny water balloons, storing liquids until the camel needs them.
When the camel drinks, the cells grow larger and larger. For a whole week, they can keep the animal's thirst away by sending water to all parts of its body.
And did you ever wonder why the camel has a hump? The hump is a storage place for fat.
Because it has this storage area, the camel does not need to eat very often. When the animal needs energy, the layers of fat serve as fuel to keep it going on the long, hot days in the burning sun.
The camel has one other gift that makes it well suited to arid regions. This gift is its amazing nose. A camel can smell a water hole from miles away!
When a camel moves it sways from side to side like a ship on a wavy ocean. Because of this swaying motion, the camel has been called the "Ship of the Desert. "
The camel's hump is a storage place for________.
A.muscles
B.extra water
C.body sugars
D.fat
49、
We can conclude from this passage that camels________.
A.feel at home in the desert
B.like to carry heavy loads
C.look like ships from a distance
D.will always be useful
50、
The author compares cells with water balloons in order to________.
A.make you think of summer
B.help you visualize the cells
C.show how rubber is elastic
D.show how many shapes cells can have
51、
The word "arid" is closest in meaning to________.
A.sunny
B.flat
C.dry
D.sandy
52、根据下面内容,回答52-71题:
Have you ever wondered why authors write? Sometimes they are inspired to create stories. Other times they write to provide information about an interesting topic. Some authors write to convince us about something. Whatever the circumstances, authors have reasons for writing; this is called, the "author's purpose. " The three most common types of author's purpose are: to entertain,to inform, and to persuade.
Think about the last time a story made you laugh, cry, or tremble with fright. These types of stories are written with a particular purpose in mind: to entertain the reader. Authors write many kinds of stories to entertain, including humorous fiction, realistic fiction, fantasy, fairy tales, and fables. While fiction entertains, non-fiction has a different purpose.
Many non-fiction writings or texts are written with the purpose of giving information about an interesting topic. Authors who write to inform must research their subject to ensure that they convey accurate information to the reader. Some examples of texts that inform are encyclopedia entries, news articles, expository non-fiction books, and interviews. All of these types of writing give information about certain topics.
Sometimes authors write because they want to convince their readers about something. This is called argumentative, or persuasive writing. Oftentimes, texts that are meant to persuade use specific techniques to make the reader care about the subject, and to think about it in a certain way. These techniques might be found in letters to the editor, argumentative essays, or persuasive speeches.
Next time you read a text, see if you can figure what the author is trying to tell you. It might be easier than you think. Just ask yourself: what is the author' s purpose?
Which of the following is most likely the title of a passage in which the author' s purpose is to entertain ?
A.Why Dogs are Smarter than Cats
B.An Interview with J. K. Rowling
C.The Adventures of Waldo Wizard
D.An Argument for Shorter Classes
53、
According to the passage, authors who write to inform want to________.
A.provide information about a certain topic
B.make the reader laugh,cry,or scream
C.convince the reader to do something
D.invite the reader to critique their work
54、
According to the passage, texts that are meant to persuade often________.
A.do not get as much attention as texts that entertain or inform
B.are very entertaining because they convince readers to laugh
C.use specific techniques to make the reader care about the subject
D.require a lot of research in order to ensure accuracy of information
55、
The author' s purpose in writing this passage is________.
A.to persuade
B.to convince
C.to entertain
D.to inform