【单选题】听力原文:W: Alexander, you speak quite good English. How did you learn a foreign language so well? You know English is really a headache for me. I just don't know how to learn it well. M: Well, when learn...
A.
He's offering some suggestions about learning foreign languages.
B.
He's asking the woman for help to improve his English.
C.
He's discussing with the woman how to listen to a language regularly.
D.
He's talking about the importance of taking notes in foreign languages learning.
【简答题】用隐性纯合个体与杂合的显性性状个体进行测交实验,后代显隐性性状个体比为( )。
【判断题】某开发区国有资金投资办公楼建设项目, 该项目招标公告和招标文件中的部分规定: 招标人不接受联合体投标。
【单选题】二级标准重铬酸钾用前应在120°C灼烧至 。 [中]
【单选题】—Hi, Jenny! Nice to meet you! —_______________________ [ ]
【单选题】燃料电池发电时,需连续不断地向电池内送入燃料和氧化剂,排除反应生成物什么?
【判断题】用隐性纯合个体与杂合的显性性状个体进行测交实验,后代显隐性性状个体比为1:1。
【单选题】二级标准重铬酸钾用前应在120°C灼烧至 。