Fruit's not only good to eat, but it can also power this Fruit Digital Clock．This clock uses the scientific principles on which modern electrical storage batteries are based．The acid(酸)from the fruit helps transmit an electrical flow between two metal poles．The clock is priced at US ＄ 15．Adding any fresh fruit or vegetable to the clock will make it work．The fruit is a clean, renewable source of electrical power．
USB vacuum
Do you know the dirtiest parts of your desk are probably your keyboard and mouse?Get a USB Mini Vacuum with retractable(可伸缩的)cable and suck away all that junk．The US-made product is priced at US ＄14．
SIM card reader
Making useful USB 2.0 multi-card reader even handier, this card can also read and write data to phone SIM cards．It comes with SIM editing software．Download your phonebook to your computer．If you lose your cell phone, you can store missing phone numbers in your new one the US-made IMOMO SIM card＋Multi-Card Reader is priced at US ＄19(152 yuan)．
Beer in your ear
The beer barrel(桶)-shaped Naf Naf Hyp MP3 is a musical box that's capable of playing radio, CDs and cassettes．It's got all the standard features of the typical clock-radio, but with the relaxing look of a big beer barrel．The Danish product is priced at about US ＄130(1040 yuan)．
(1)
If you have 115 yuan, which product can you buy according to the passage?
[ ]
A．
Fruit powered digital clock
B．
USB vacuum
C．
SIM card reader
D．
Naf Naf Hyp MP3
(2)
Which of the following statements is TRUE?
[ ]
A．
Fruit and vegetables cannot be used as batteries to make a clock work．
B．
USB vacuum can be used to clean your house and yard．
C．
With SIM card reader you won't lose phone numbers．
D．
Naf Naf Hyp MP3 can play radio, DVD and cassettes．
(3)
What does “junk” mean in the second item?
[ ]
A．
dirt
B．
desk
C．
keyboard
D．
mouse
(4)
The passage is most likely a(n)________．
[ ]
A．
entertainment information
B．
science reports on new high-technology
C．
introduction of some kinds of musical boxes
D．
advertisement for new products
(5)
SIM card reader can be used to ________．
[ ]
A．
edit all the data in your computer
B．
remove data in phone SIM cards specially
C．
help restore your phone book in a new cell phone
D．
transfer any file between a computer and a cell phone
Suppose we built a robot(机器人)to explore the planet Mars．We provide the robot with seeing detectors(探测器)to keep it away from danger．It is powered entirely by the sun．Should we program the robot to be equally active at all times?No．The robot would be using up energy at a time when it was not receiving any．So we would probably program it to stop its activity at night and to wake up at dawn the next morning．
According to the evolutionary(进化的)theory of sleep, evolution equipped us with a regular pattern of sleeping and waking for the same reason．The theory does not deny(否认)that sleep provides some important restorative functions(恢复功能)．It merely says that evolution has programmed us to perform those functions at a time when activity would be inefficient and possibly dangerous．However, sleep protects us only from the sort of trouble we might walk into; it does not protect us from trouble that comes looking for us．So we sleep well when we are in a familiar, safe place, but we sleep lightly, if at all, when we fear that bears will nose into the tent．
The evolutionary theory explains the differences in sleep among creatures．Why do eats, for instance, sleep so much, while horses sleep so little?Surely cats do not need five times as much repair and restoration as horses do．But cats can afford to have long periods of inactivity because they spend little time eating and are unlikely to be attacked while they sleep．Horses must spend almost all their waking hours eating, because what they eat is very low in energy value．Moreover, they cannot afford to sleep too long or too deeply, because their survival(生存)depends on their ability to run away from attackers．
(1)
The author uses the example of the robot in space exploration to tell us ________．
[ ]
A．
the differences between robots and men
B．
the reason why men need to sleep
C．
about the need for robots to save power
D．
about the danger of men working at night
(2)
Evolution has programmed man to sleep at night chiefly to help him ________．
[ ]
A．
keep up a regular pattern of life
B．
prevent trouble that comes looking for him
C．
avoid danger and inefficient labour
D．
restore his bodily functions
(3)
According to the author, we cannot sleep well when we ________．
[ ]
A．
are worrying about our safety
B．
are overworked
C．
are in a tent
D．
are away from home
(4)
Cats sleep much more than horses do partly because cats ________．
[ ]
A．
need more time for restoration
B．
are unlikely to be attackers
C．
axe more active than homes when they are awake
D．
spend less time eating to get enough energy
(5)
Which of the following is the main idea of the passage?
[ ]
A．
Evolution has equipped all creatures with a regular pattern of sleeping and waking．
B．
The study of sleep is an important part of the evolutionary theory．
C．
Sleeping patterns must be taken into consideration in the designing of robots．
D．
The sleeping pattern of a living creature is determined by the food it eats．
阅读理解：
Good health is the most valuable possession a person can have, but one can’t take good health for granted．It is important to remember that the body needs proper care in order to be healthy．There are three things that a person can do to help stay in good shape：eat the right foods, get enough sleep and exercise regularly．
Proper nutrition is important for good health．Your body cannot function well unless it receives the proper kind of“fuel”．Avoid foods with lots of sugar and fat．Eat plenty of foods high in protein, like lean meat, fish, beans and nuts．Vegetables and fruit are especially important because they provide necessary vitamins and minerals．However, don’t overeat．It is not healthful to be overweight．
Getting the proper amount of sleep is also important．If you don’t get enough sleep, you feel tired and irritable(易怒的)．You have no energy．Over a long period of time a little amount of sleep may even result in a change of personality．Be sure to allow yourself from seven to nine hours of sleep each night．If you do, your body will feel strong and refreshed, and your mind will be sharp．
Finally, get plenty of exercise．Exercise firms the body, strengthens the muscles and prevents you from gaining weight．It also improves your heart and lungs．If you follow a regular exercise program, you will probably increase your lifespan(寿命)．Any kind of exercise is good．Most sports are excellent for keeping the body in good shape．Basketball, swimming, bicycling, gymnastics and running are all good examples．Sports are not only good for your body, but they are enjoyable and interesting, too．
If everybody were to eat the right foods and get plenty of sleep and exercise regularly, the world would be a happier and healthier place．We would all live to be much older and wiser．
(1)
According to the passage, ________．
[ ]
A．
proper care is very important for us to keep fit
B．
if we are healthy, we can adventure ourselves in doing things with less sleep
寒假天地重庆出版社系列答案
Organic fruit, delivered right to the doorstep．That is what Gabriel Gold prefers, and he is willing to pay for it．If this is not possible, the 26-year-old computer technician will spend the extra money at the supermarket to buy organic food．
afraid. A person with a green thumb