阅读短文并根据文章内容回答问题，注意答案不要超过题目规定的词数。1. What is the article mainly about? (No more than 6 words)__________________________________________2. How is human waste dealt with on planes? (No more than 8 words)_________________________________________3. What are the possible causes of turbulence? (No more than 7 words)__________________________________________4. Why are plane windows round? (No more than 18 words)_______________________________________________5. Translate the following sentence into Chinese.If a tank leaks high in the air, the water freezes once it hits the outside air and melts before it hits the ground.___________________________________________________ __________________________________________