你使用翻譯<span>Nǐ shǐyòng fānyì</span>
I believe its 300 or hotter. But 300 is the most used temp.
Here's a myth buster: There is no lead in pencils. Rather, the core is made up of a non-toxic mineral called graphite. The common name “pencil lead” is due to an historic association with the stylus made of lead in ancient Roman times.
This statement is very true. there are records of many theater productions starting from the mid 1770's, until present day time.
I would say a is the answer