More and more people attach great importance relationships in career success. Being polite is the first and most important step to develop good relationships among friends. Polite word can be easy yet very powerful in your daily life.

Always saying “please” and “thank you” will make your friends feeling more comfortable and more willingly to offer help when necessary. We all know that one man’s success is based on what he deals with people. Always being grateful to others people’s kindness and show your gratitude through the words you say. The more support you win from other people, the more faster you will move towards your goal.

Remember, being polite cost nothing so it’s worth a million dollars.

2 . I was a shy girl and I was afraid to talk to people I didn’t know. I enjoyed the______of exploring nature. ______, at school I had to spend all day in the company of others. My ______ was reading. I spent a lot of time studying and was ______ good grades. My only failure was Spanish—I’d get all As on my written work and tests, but Ds and Fs on the ______ part.

Eventually I went to college. During my third year of college, I had ______ of being shy and determined to change my outlook and behavior. One day while at school, I noticed an advertisement for ______ on the local classical music radio station. I had ______ listening to classical music, and I could easily pronounce names such as Tchaikovsky and Chopin.

I had no background in radio, and absolutely no hope of getting the job. The idea of ______ thousands of listeners in “radio land” terrified me. However, I ______ survived the interview. I was given brief descriptions of symphonies (交响乐) and a public service announcement to read, and a list of composers’ names to ______. It wasn’t hard for me. I left the recording session (录音场次) with a sense of relief and a sense of ______. About two weeks later I actually landed the job. It was a ______ job, but I grew to ______ it greatly. I began to feel comfortable talking to people.

Although I now spend many hours each week talking with people, I’m ______ basically a quiet person. Perhaps it is my soft voice and my ______ nature that helps draw people out when they respond to my questions when I ______   them. My former shyness is a ______, as I can relate to people who feel discomfortable when they talk to reporters. I still enjoy moments of loneliness and the ______ found in nature. But I’m also glad I decided to make a ______ in my life that has opened many doors and opportunities that I never knew existed.

3 . We can video chat with astronauts aboard the International Space Station and watch live footage from the frozen heights of Everest. But communicating with a submarine (潜艇) or a diver is not so easy. The lack of practical methods for sharing data between underwater and airborne devices has long been a frustration for scientists. The difficulty stems from the fact that radio signals work perfectly in air travel but poorly in water. Sonar (声呐) signals used by underwater sensors reflect off the surface of the water rather than reaching the air.

Now, researchers at MIT have developed a method with the potential to revolutionize underwater communication. “What we’ve shown is that it’s actually feasible to communicate from underwater to the air,” says Fadel Adib, a professor at MJT’s Media Lab, who led the research. The MIT researchers designed a system that uses an underwater machine to send sonar signals to the surface, making vibrations (震动) corresponding to the 1s and 0s of the data. A surface receiver then reads and decodes these tiny vibrations. The researchers call the system TARF. It has any number of potential real-world uses, Adib says. It could be used to find downed planes underwater by reading signals from sonar devices in a plane’s black box and it could allow submarines to communicate with the surface.

Right now the technology is low-resolution (低分辨率). The initial study was conducted in the MIT swimming pool at maximum depths of around 11 or 12 feet. The next steps for the researchers are to see if TARF is workable at much greater depths and under varying conditions—high waves, storms, schools of fish. They also want to see if they can make the technology work in the other direction— air to water.

If the technology proves successful in real-world conditions, expect “texting while diving” to be the latest underwater fashion.