As humans, we have five tools 【小题1】 help us explore the world around us. The first one is sight. You can watch a movie, see a beautiful sunset, or run and play outside because of your 【小题2】 (eye). The second important sense is hearing. Our ears allow us 【小题3】   (enjoy) things like talking with our friends and listening to music. 【小题4】 (be) able to hear also helps protect us from 【小题5】 (dangerous); for example, we can hear if a car is coming when we’re crossing the street. Smell is another important sense. 【小题6】   our noses we couldn’t enjoy things like our favourite meal or flowers. Our nose also helps us know 【小题7】 we’re eating. The 【小题8】 (four) important sense is taste. Our tongues (舌头) can pick out five types of tastes — bitter, sour, sweet, hot and 【小题9】   (salt). The last important sense is touch. Our skin is very sensitive (敏感的) to what it touches, allowing us to feel. Our sense of touch can also prevent us 【小题10】 (hurt).

Peanuts are among the most popular snack foods in the US. Millions of American children 【小题1】 (raise) on peanut butter and jelly sandwiches. Now, many school officials ban peanuts or any products containing peanuts 【小题2】 school property.

About 2 percent of U.S. schoolchildren have an allergic reaction to peanuts. And that number is growing. People allergic to peanuts can develop skin conditions or watery eyes. Children with a peanut allergy can develop a skin condition 【小题3】 (call) eczema. Some reactions are 【小题4】 severe that they can result in death.

So far, doctors 【小题5】 (advise) parents against serving peanut-containing foods to children under the age of 3. But a British study found that waiting too long most likely is 【小题6】 (part) to blame for the peanut allergy problem.

Anthony Fauci is head of America’s National Institute of Allergy and Infectious Diseases. He notes that in Israel, people have a tradition of feeding peanuts to 【小题7】 (baby). The percentage of Israeli children with a peanut allergy is much 【小题8】 (low) than the rate among Jewish children 【小题9】 (live) in England.

Dr. Fauci says this finding is very important. It means that babies have a natural mechanism(机制)【小题10】 can be trained not to react negatively to peanuts. That mechanism may stop functioning as the baby reaches the age of 1.

Whether you see red， feel blue， or go green with envy may depend on what country you call home． And when they were given data on how 【小题1】   person associated colors with emotions， researchers could correctly predict where they 【小题2】（ be） from． The scientists surveyed 711 people from China， Germany， Greece， and the United Kingdom． 【小题3】 （volunteer） read the word for 12 colors， such as "green" and "black．" 【小题4】（them） then indicated what emotion the colors brought to mind， and how strongly the color was tied to the feeling． Across the board， the colors 【小题5】 inspired the most emotion were red， black， and pink， but brown and purple didn't have that strong associations． Black was associated with 【小题6】（sad） across all countries， for example， and red with positive emotions 【小题7】 love and pleasure， along with negative feelings such as anger and hate． Still， there were some 【小题8】（culture） differences． For instance， brown was a 【小题9】（strong） association with disgust in Germany than in other countries． People from Greece were the only group to associate purple firstly with unhappiness． White 【小题10】（consider） as more negative in China （people there traditionally wear white to funerals）， and yellow was positive in all countries except Greece．