【单选题】听力原文:M: I think I'm more interested in sports now. I can't imagine how I can live without sports. W: Don't you think you should spend more time on your studies? Remember you have failed your exams for...
A.
She thinks that the man should be more interested in sports.
B.
She thinks that the man should work harder on his studies.
【单选题】听力原文:M: I think I'm more interested in sports now. I can't imagine how I can live without sports. W: Don't you think you should spend more time on your studies? Remember you've failed your exams three...
A.
She thinks that the man should be more interested in sports.
B.
She thinks that the man should work harder on his studies.
【简答题】肺炎双球菌转化实验中, S 型菌的部分 DNA 片段进入 R 型菌内,并整合到 R 型菌的 DNA 分子上,使 R 型菌转化为 S 型菌。下列叙述正确的是 A .在进入 R 型菌的 DNA 片段上,有 RNA 聚合酶的结合位点 B . R 型菌转化成 S 型菌的过程中, R 型菌发生了染色体变异 C . R 型菌转化成 S 型菌前后的 DNA 中,嘌呤所占比例发生了改变 D . S 型菌的翻译过程...