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【单选题】
如果用下图表示相关概念之间的关系，下列选项中与图示相符的是 选项 Ⅰ Ⅱ Ⅲ Ⅳ A 鱼类 爬行类 鸟类 哺乳类B.
染色体 DNA 基因 细胞核
C.
种子 胚 子叶 种皮
D.
微生物 病毒 细菌 真菌
拍照语音搜题，微信中搜索"皮皮学"使用
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皮皮学刷刷变学霸
举一反三
【单选题】Section B Long Conversations Conversation 1— A Discussion about Picasso Questions 8 to 11 are based on the conversation you have just heard. 8.
A.
The 20th century.
B.
The 19th century.
C.
The 21st century.
D.
The 18th century.
【简答题】Questions 1-8 are based on the eight short conversations you have just heard.
【单选题】Section B Long Conversations Conversation 1——The Purpose of Nanobots Questions 8 to 11 are based on conversation you have just heard. Question 8
A.
They are large in size.
B.
They are small in size.
C.
They are extremely small in size.
D.
They are very large in size.
【简答题】．在平面直角坐标系中，x轴正半轴上有5个点, y轴正半轴有3个点，将x轴上这5个点和y轴上这3个点连成15条线段，这15条线段在第一象限内的交点最多有 个
【单选题】在平面直角坐标系中，x轴正半轴上有5个点，y轴正半轴上有3个点，连成15条线段，这15条线段在第一象限内的交点最多有
A.
105个
B.
35个
C.
30个
D.
15个
【简答题】Questions 1-8 are based on the short conversations you hear in this section.
【单选题】listen to the following two conversations and complete the following exercises. conversation 1-8
A.
To confirm an urgent appointment.
B.
To collect a package from the woman.
C.
To ask the woman to sign a document.
D.
To arrange the delivery of a package.
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