The stories of Sarah Orne Jewett are considered by many to be more (authentically) regional than those of Bret Harte.
A. elegantly
B. genuinely
C. intentionally
D. thoroughly
查看答案
环状沉淀试验反应时间为
A. 72h
B. 24h
C. 3～7min
D. 30min
E. 48h
Passage ThreeQuestions 33 to 35 are based on the passage you have just heard.
A. The US should catch up to European environmental standards.
B. American exporters must adapt to new regulations in Europe.
C. The US should be more sensitive to environmental issues.
D. The U’s new regulations are a burden.
Questions 19 to 21 are based on the conversation you have just heard.
Annoying and dislikable.
B. Annoying but common.
Common and acceptable.
D. Impolite but common.
细菌RNA聚合酶的6亚基是
A. 肝素结合位点
B. 利福平作用位点
C. DNA模板结合位点
D. 与四聚体核心形成有关
E. 识别启动子
微信支付 
支付宝支付