Going to sleep may seem pretty boring compared with all the fun things there are to do while you're awake．But there's a lot going on in your mind and body while you're tucked under those covers．
Sleep, in fact, is as important to your survival as eating and drinking．Sleep improves your mood, makes you a better athlete, and helps you remember and understand what you learned during the day．During sleep your temperature drops．Your heart rate slows．Down goes the pressure of the blood moving through your veins．A chemical that controls growth(called a hormone)surges into your bloodstream．Scientists think sleep restores energy and improves your immune(免疫)system．We know what happens while we're asleep because scientists study volunteers who sleep in laboratories．The sleepers are hooked up to machines that measure brain waves, eye movements and muscle activities．
Sleep is like a school day：it's divided into different periods, or stages．When you're awake, your brain waves fire rapidly．As you begin to relax and drift into the first stage of sleep, your brain produces slower-moving waves and you lose awareness of your surroundings．As you slide to deeper sleep, your body repairs itself from the normal wear and tear of daily life．Then, as you begin to drift back up to a lighter sleep, your mind becomes more alert(机警), and your dreams begin．You're in REM sleep．
REM was names far the“rapid eye movement' that happens while you're dreaming．During REM sleep, your eyes move back and forth behind your timed lids, as though you were washing a movie．During other stages, you might move at that in bed, but during REM sleep you're still．That's probably because if you could move, your body would act out your dreams．As you get closer to morning, you spend more time in REM than in deep sleep, so you dream more．Researchers know that during REM sleep the part of the brain that handles learning and thinking is very active．
Getting too little sleep can affect your personality．Experts recommend that children get at least nine hours d sleep a night．So sleep fight．
(1)
What does the word“recommend”in the last paragraph mean?
[ ]
A．
Suggest．
B．
Ask．
C．
Wish．
D．
Order
(2)
Sleep has many advantages except ________．
[ ]
A．
improving your mood
B．
making you strong
C．
helping you study
D．
practicing your eyes
(3)
During your sleep, ________．
①your body repairs itself from the normal wear and tear of daily life
②your brain produces slower-moving waves
③your dream begins
④you loose awareness of surroundings
Choose the right order：
[ ]
A．
①③②④
B．
②④①③
C．
④①③②
D．
④③①②
(4)
Suppose this is the course of your sleep, in which part of the course do you have dreams?
[ ]
A．
light sleep
B．
deep sleep
C．
light sleep
D．
the whole course
(5)
Which of the following is NOT right?
[ ]
A．
Hormone has something to do with your growth．
B．
You cannot move while you are in REM sleep, dreaming．
C．
The closer to morning, the more dreams you have．
D．
You may move around in your bed during your sleep．
One of the largest countries in Texas is named for Captain Erastus“Deaf”Smith－a deaf man．Captain Smith was the leader of General Sam Houston's scouts during the Texas Revolution, the war in which Texas won its freedom from Mexico．The county named in his honor is called Deaf Smith County．
A scout in the days of the Texas Revolution was much like what a spy is today．Captain“Deaf”Smith would find out where enemy troops were camped and how many men the enemy had, and he would report to Sam Houston．Even when other people could not see or hear any sign of people or animals, Captain Smith would know where they were．Sometimes he would guide Texas troops through enemy territory without the enemy even knowing they were there．
Erastus Smith was born in New York on April 19,1787; but went to live：in Mississippi when he was 11 years old．He went to Texas for a short time in 1817, and four years later returned to Texas to stay; He wandered over Texas as a surveyor(测量员)before he volunteered for army service after the start of the Texas Revolution．
Smith married a Mexican woman, and they had four children－three girls and one boy．He spent a lot of time learning the customs, manners, and language of the Mexican settlers．When the Texas Revolution began in 1835, Smith at first refused to take part in it out of respect for his family's heritage(传统)．However, after Mexican troops tried to stop him from going to San Antonio to visit his family, he volunteered for service with the Texans．He was made a captain．
(1)
At first, Smith refused to take part in the Texas Revolution because ________．
[ ]
A．
he was a peace-loving person and hated fighting
B．
Mexican soldiers stopped him from going to San Antonio
C．
the Texans were not very good to him and his family
D．
his wife was Mexican and he didn't want to fight against her people
(2)
How old was Smith when he settled in Texas?
[ ]
A．
Thirty－four．
B．
Eleven．
C．
Thirty．
D．
Twenty-seven．
(3)
Which of the following is the correct order of the events?
a．A county in Texas was named after Smith．
b．Smith got married to a Mexican woman．
c．Smith volunteered for service with the Texans．
d．Mexican troops tried to stop him from seeing his family．
e．Smith went to live in Mississippi．
f．The Texas Revolution started．
[ ]
A．
a－b－c－d－e－f
B．
e－b－d－c－a－f
C．
b－e－f－d－c－a
D．
e－b－f－d－c－a
(4)
Which of the following was a great help in Smith's work as a scout?
[ ]
A．
His family's heritage．
B．
His experience as a surveyor．
C．
His deafness．
D．
His good eyesight．
(5)
Which of the following is the best title for the passage?
Our boat floated on, between walls of forest too thick to allow us a view of the land we were passing through, though we knew from the map that our river must from time to time be passing through chains of hills which crossed the jungle plains．Nowhere did we find a place where we could have landed：where the jungle did not actually spread right down into the river, banks of soft mud prevented us going ashore．In any case, what would we have sailed by landing?The country was full of snakes and other dangerous creatures, and the jungle was so thick that one would be able to advance only slowly, cutting one’s way with knives the whole way．So we stayed in the boat, hoping we reached the sea, a friendly fisherman would pick us up and take us to civilization．
We lived on fish, caught with home-made net of string(we had no hooks), and fruits and nuts we could pick up out of the water．As we had no fire, we had to eat everything, including the fish, raw I had never tasted raw fish before, and I must say I did not much enjoy the experience; perhaps sea fish which do not live in the mud are less tasteless．After eating my raw fish, I lay back and dreamed of such things as fried chicken and rice, and ice-cream．In the never-ending damp heat of the jungle, ice-cream was a particularly frequent dream．
As for water, there was a choice：we could drink the muddy river water, or die of thirst．We drank the water．Men who had just escaped what had appeared to be certain death lose all worries about such small things as diseases caused by dirty water．In fact, none of us suffered from any illness as a result．
One day we passed another village, but fortunately nobody saw us．We did not wish to risk being taken prisoners a second time：we might not be so lucky to escape in a stolen boat again．
(1)
What they could see in the boat was only ________．
[ ]
A．
high wall
B．
villagers from time to time
C．
vast land
D．
heavy woods
(2)
They couldn’t land because ________．
[ ]
A．
the mud on the shore was too soft
B．
the forest was too thick to let them go through
C．
they could not find the mark on the map
D．
they could not find anyone to lead them out of the forest
(3)
The passage infers that the forest was ________．
[ ]
A．
rich of fruits and animals to be served as food
B．
not very thick as they could advance slowly by cutting the branches
C．
full of various dangerous beings
D．
full of ancient trees
(4)
The most proper title for this passage might be ________．
[ ]
A．
Escape
B．
Scenes of a River
C．
How to Survive on a boat
D．
A New Experience
阅读理解：
Our boat floated on, between walls of forest too thick to allow us a view of the land we were passing through, though we knew from the map that our river must from time to time be passing through chains of hills which crossed the jungle plains．Nowhere did we find a place where we could have landed：where the jungle did not actually spread right down into the river, banks of soft mud prevented us going ashore．In any case, what would we have sailed by landing?The country was full of snakes and other dangerous creatures, and the jungle was so thick that one would be able to advance only slowly, cutting one’s way with knives the whole way．So we stayed in the boat, hoping we reached the sea, a friendly fisherman would pick us up and take us to civilization．
We lived on fish, caught with home-made net of string(we had no hooks), and fruits and nuts we could pick up out of the water．As we had no fire, we had to eat everything, including the fish, raw I had never tasted raw fish before, and I must say I did not much enjoy the experience; perhaps sea fish which do not live in the mud are less tasteless．After eating my raw fish, I lay back and dreamed of such things as fried chicken and rice, and ice-cream．In the never-ending damp heat of the jungle, ice-cream was a particularly frequent dream．
As for water, there was a choice：we could drink the muddy river water, or die of thirst．We drank the water．Men who had just escaped what had appeared to be certain death lose all worries about such small things as diseases caused by dirty water．In fact, none of us suffered from any illness as a result．
One day we passed another village, but fortunately nobody saw us．We did not wish to risk being taken prisoners a second time：we might not be so lucky to escape in a stolen boat again．
(1)
What they could see in the boat was only ________．
[ ]
A．
high wall
B．
villagers from time to time
C．
vast land
D．
heavy woods
(2)
They couldn’t land because ________．
[ ]
A．
the mud on the shore was too soft
B．
the forest was too thick to let them go through
C．
they could not find the mark on the map
D．
they could not find anyone to lead them out of the forest．
(3)
The passage infers that the forest was ________．
[ ]
A．
rich of fruits and animals to be served as food
B．
not very thick as they could advance slowly by cutting the branches
C．
full of various dangerous beings
D．
full of ancient trees
(4)
The most proper title for this passage might be ________．
