左附件区囊肿可能为
A.卵巢黄素囊肿
B.卵巢黄体囊肿
C.卵巢滤泡囊肿
D.皮样囊肿
E.卵巢巧克力囊肿
参考答案:A
我国在春秋战国时期就掌握将生铁退火处理得到铸钢的技术,比欧洲早两千年,生铁退火处理的主要作用是( )
A.除硫、磷杂质
B.降低含碳量
C.掺进合金元素
D.提高含碳量
A.(A) Lend him some books.
B.(B) Give him more advice.
C.(C) Return the books by Wednesday.
D.(D) Let him use her notes.