皮皮学，免费搜题
登录
搜题
【单选题】
下列哪种物质不是细菌合成代谢产物A.
色素
B.
细菌素
C.
热
D.
抗毒素
E.
抗生素
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】Back in the early 1900s, American physician Byron Robinson wrote a book proposing an interesting theory: humans actually have two brains --- one in our heads and the other in our stomachs, and the two...
【单选题】People were confused in their attempts to control malaria in Europe in the early 1900s, because scientists
A.
identified only one mosquito species instead of six species.
B.
thought only three mosquito species transmitted disease.
C.
thought there was only one mosquito species.
D.
did not know what species was being studied.
【多选题】Which choice of guidelines on topic selection is correct?
A.
Selecting a topic that fits the requirements of the assignment
B.
Selecting a topic that does not interest you
C.
Selecting a topic that is interesting and valuable to your audience
D.
Selecting a topic that takes 20 points to clarify
【单选题】Who opposed the bill that was introduced in the House of Commons in the early 1900s
A.
Sir Robert Pearce
B.
farmers
C.
television and radio broadcasting companies
D.
the U.S. Congress
【单选题】听力原文： In the early 1900s, most Americans lived on farms, and they clearly understood their role in the family. Women usually got up before the sun to milk cows, gather eggs and prepare a big breakfast...
A.
They worked in laundries.
B.
They did typing and bookkeeping.
C.
They worked as seamstresses.
D.
They did laundry, cooking, and sewing at home.
【简答题】The early 1900s were very different from today, when toys were still the delight of children everywhere. Theodore Roosevelt's Presidency marks the beginning of the “Teddy Bear”. In the year 1902，toy b...
【简答题】How to translate the topic "Emerging hood"? Which period does it refer to?
相关题目：