Ca3(PO4)2+SiO2+C →高温 CaSiO3+P4↑+CO↑
选出不同类别的单词。
①____ A.English B. Friday C. maths
②____ A.Monday B. kind C. Thursday
③____ A.Sunday B. strict C. strong
④____ A.art B. English C. classes
⑤____ A.watch B. read C. week