Many animals recognize their food because they see it. So do . When you see an apple or a piece of chocolate you know that these are things you can eat. You can also use other when you choose your food. You may it because it smells good or because it good. You may dislike some types of food because they do not look, smell or taste very nice.
Different use different senses to find and choose their food. A few animals depend on only one of their senses, while most animals use more than one sense.
Although there are many types of food, some animals spend their lives eating only one type. The giant panda eats only one type of bamboo. Other animals eat only one type of food even when given the . A kind of white butterfly will stay on the leaves of a cabbage, even though there are plenty of other in the garden. However, most animals have a more diet. The bear eats fruits and fish. The fox eats small animals, birds and fruits. The of these animals will be different depending on the season.
have a very varied diet. We often eat food because we like it and not because it is for us. In countries such as France and Britain, people eat foods with too much . This makes them overweight, which is bad for their health. Eating too much red meat and animal , such as butter, can also be bad for the health. Choosing the right food, therefore, has become an area of study in modem life.
A．males B．children C．humans D．adults
A．organs B．senses C．parts D．means
A．hate B．sell C．like D．fancy
A．digests B．consumes C．touches D．tastes
A．creatures B．mammals C．people D．animals
A．different B．rare C．familiar D．unique
A．typical B．particular C．special D．unusual
A．food B．meal C．choice D．diet
A．flowers B．vegetables C．fruits D．branches
A．varied B．creative C．random D．nutritious
A．fish B．fruit C．diet D．insect
A．Animals B．Chinese C．Humans D．Foreigners
A．effective B．beneficial C．delicious D．attractive
A．sugar B．nicotine C．fiber D．alcohol
A．products B．attachments C．goods D．subscriptions
People do not analyze every problem they meet. Sometimes they try to remember a solution from the last time they had a 21 problem. They often accept the opinion or ideas of other people. Other times they begin to act without 22 ；they try to find a solution by trial and error. 23 .，when all of these methods 24 ，the person with a problem has to start analyzing. There are six 25in analyzing a problem.
26 the person must recognize that there is a problem. For example, Sam's bicycle is broken, and he cannot ride it to class as he usually does. Sam must see that there is a problem with his bicycle.
Next the person must 27 the problem. Before Sam can repair his bicycle, he must know why it does not work. For example, he must determine the parts that are wrong.
Now the person must look for 28 that will make the problem clearer and lead to possible solutions. For example, suppose Sam 29 that his bike does not work because there is some thing wrong with the brakes(刹车). 30 , he can look in his bicycle repair book and read about brakes, 31 his friends at the bike shop, or look at his brakes carefully.
After studying the problem, the person should have 32 suggestions for a possible solution. Take Sam as an example 33 ，his suggestions might be: tighten or loosen the brakes; buy new brakes and change the old ones.
In the end, one 34 seems to be the solution to the problem. Sometimes the __35__ idea comes quite 36 because the thinker suddenly sees something new or sees something in a 37 way. Sam, for example, suddenly sees there is a piece of chewing gum（口香糖）stuck to a brake. He 38 finds the solution to his problem ：he must___39___the brake.
Finally the solution is tested .Sam finds that his bicycle 40 perfectly. In short he has solved the problem.
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When I smoked with my family, I would feel so 36 and good that nothing else in the world seemed so 37 . I thought that smoking weed (烟草) was okay since many of my family members and people at my school smoked. 38 ever happened to them. 39 I started smoking weed a lot more during lunch and after school. I never thought 40 of it. At that time I just wanted to smoke. Then I began to 41in school. I would 42 classes, come home late and spend all my money. I would spend 43 8 to 18 dollars a day. I never thought 44 that marijuana (大麻) had a bad effect on those things. Maybe my coming to class high (神智恍惚) was the reason why I was failing or coming home late. As I continued to smoke marijuana, I began to notice that I would always have the strong desire to smoke and that I would get 45 cigarettes if I smoked those, but I don’t. 46 I have learned more about marijuana, I have 47 the amount of marijuana that I use. I don’t want marijuana to be the most important in my life. I’m not smoking every day, and not spending as much money. Since I have 48 on my habit, I am 49 more money. I’m ready to go back to school and do good, so that I can make myself 50 . Everyone is always saying how weed 51 your mind and how it solves problems. I think it only brings more 52 . Marijuana is not good for your body or your brain. I’m not trying to tell you not to smoke, I’m just letting you know that marijuana can be 53 to your health, and 54 it may cause some long term negative (负面的) effects. Help yourself now, before it is too late. I don’t want to lecture anyone, just 55 my experience with you.
A．worried B．relaxed C．disappointed D．moved
A．important B．common C．interesting D．funny
A．something B．Everything C．Nothing D．Anything
A．By the way B．Now and then C．In my opinion D．For a time
A．too much B．a little C．too often D．any more
A．get ahead B．fall behind C．come across D．make up
A．give B．have C．attend D．cut
A．at least B．at most C．no more than D．as little as
A．once B．twice C．again D．further
A．used to B．paid for C．lost in D．ready for
A．as if B．Even if C．Now that D．As long as
A．reduced B．increased C．bought D．continued
A．broken down B．cut down C．turned off D．cut off
A．wasting B．spending C．making D．saving
A．less B．more C．better D．worse
A．excites B．fills C．repairs D．destroys
A．problems B．pleasure C．convenience D．excitements
A．helpful B．useful C．dangerous D．strange
A．in the beginning B．in the distance C．in the long run D．in the past
A．tell B．explain C．regret D．share
Twelve years ago yesterday, my mother gave birth to the most beautiful girl. 31 , we were later given the 32 that this little girl, who was three and a half months old, would only have 14 days on the earth. It’s hard to understand what 
kind of33 you have when you find out that you’re 34 something that you don’t even know.
As time went on, the number of days kept growing, which gave us 35 . When the doctors said that we could take her home
, that was 36 reality hit. We had no 37 .
I am from a small town with 38 hospitals, but when you don’t have money, you just don’t have it. My mother tried for days to get the money, but nothing 39 each time. A caseworker(社会工作者) was even doing her best. It’s 40 that it almost felt as if we had to 41 a baby from the hospital.
One day the caseworker walked into her boss’s office to 42 again. As she walked out,43 down yet again, out of nowhere a man walked up to her. He 44
her a handful of money and said, “Please give this to the lady in 45 , so she can take her daughter home.” She looked down at her hand with tears in her eyes. As she looked back up to thank him, he was 46 . They searched all over that hospital and he was no where to be 47 .
Thanks to the guy that I will 48 know, we could take hom
e that 49 baby girl that was only given 14 days to live, and celebrated her 12th birthday yesterday. I am grateful to this man and feel that his act of 50 should be shared with everyone.
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By my third day in the hospital, I realized Owen didn’t visit. I couldn’t understand（21）______ my best friend wouldn’t come to see me. Struggling against the pain, I called his house. His Mom（22）______, and when I asked for Owen, she got quiet. “He’s not here right now,” she said. I thought it was（23）______ that she didn’t tell me where he was or offer to have him call me. But I was so weak, I just let it（24）______.I fount out later that Owen’s mom telephoned my parents right（25）______we rang off. My phone call really made her anxious, and she insisted they talked to me. Later that night, my mom （26）______ . Did I remember drinking? Did I remember being in a car? I had no idea what she was talking about, so she finally told me the news: I’d hit a tree. Owen, in the passenger seat, was thrown from the（27）______and killed instantly. The only reason I’d lived was because of my（28）______ .
My first（29）______was of shock. I’d been drink-driving? Hit a tree? Killed Owen? I felt like the worst person in the world. Even after I was able to go home several weeks later, I didn’t want to eat, I didn’t want to talk. I just（30）______at the wall in my bedroom and cried. The only person I wanted to see was Owen. I didn’t feel like hanging out with any of my old friends.
Charles R. Drew was a medical student at Columbia University in New York. Before he graduated, he wrote an article __41___ blood bank, that is, the storing of blood. Up till then, a lot of people had died from loss of blood __42___ there was no blood bank.
When the United States entered the Second World War, it became __43___ to set up blood banks. Dr Drew became __44___ of the Red Cross’s first blood bank. When the Red Cross __45___ blood banks to collect and store blood for men __46__ in battle, black American gave blood along with the whites. At ___47__ their blood was not accepted. Later blood from the blacks was ___48___ but was stored in a __49___ place from “white” blood. Although the best doctors __50___ that there was __51___ difference at all between the blood of blacks and whites, the Red Cross, with the support of the government, __52___ to separate black blood from white blood.
After the war, Dr Drew was ___53__ from Washington with three other doctors to attend a medical meeting in a southern state. In northern Carolina their car went __54___ a ditch（深沟）and Dr Drew was __55___ hurt. He had lost __56__ blood by the time a passing car took him to the __57___ hospital. But they were stopped at the gate of the hospital. “__58__him to the hospital for blacks.” No matter __59___ they said, they could not get into the hospital. They had to take him to the __60___ hospital, but on the way Dr Drew died because he had lost too much blood.
A．of B．on C．for D．in
A．though B．if C．because D．and
A．possible B．impossible C．unimportant D．necessary
A．visitor B．head C．receiver D．supporter
A．started B．expected C．promised D．forbade
A．died B．killed C．wounded D．fighting
A．most B．least C．first D．last
A．received B．accepted C．lost D．found
A．good B．cool C．hot D．separate
A．discovered B．invented C．insisted D．regretted
A．little B．much C．some D．no
A．began B．refused C．stopped D．continued
A．driving B．walking C．arriving D．running
A．from B．into C．along D．off
A．hardly B．nearly C．badly D．not
A．some B．little C．all D．much
A．biggest B．most modern C．nearest D．cheapest
A．Take B．Bring C．Send for D．Find
A．how B．what C．where D．who
A．colored B．better C．farthest D．same
ssary