题目内容

治疗黑热病的首选药物是

A. 葡萄糖酸锑钠
B. 青蒿素
C. 甲硝唑
D. 伯氨喹
E. 两性霉素B

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杜氏利什曼原虫的感染阶段是

A. trophozoite
B. amastigote
C. epimastigote
D. tachyzoite
E. promastigot

下列有关杜氏利什曼原虫的描述正确的是

A. 生活史有无鞭毛体和上鞭毛体两种形态
B. 生活史需要白蛉和哺乳动物两个宿主
C. 引起的疾病可用血涂片法进行诊断
D. 生活史中有世代交替
E. 无鞭毛体经瑞氏液染色后,细胞质呈紫色

人源型黑热病的传播媒介主要是

A. 家栖型中华白蛉和新疆长管白蛉
B. 近野栖型中华白蛉和家栖型中华白蛉
C. 近野栖型中华白蛉和新疆长管白蛉
D. 吴氏白蛉和亚历山大白蛉
E. 家栖型中华白蛉和吴氏白蛉

Understanding the Structureof text C in Unit 8Expository writing is structured in a way that provides readers with facts and information. Authors writing in expository-style can organize or structure their material in five different ways. Choose the one that best suits the text.

A. Descriptive structure, which goes into great detail describing a topic.
B. Sequence or list structure, in which information and ideas being given are presented in chronological order.
Compare and contrast approach, which involves discussing the similarities and differences between people, places, items, or events.
D. Cause and effect sequence, in which the author effectively shows how one event leads to another.
E. Problem and solution format, in which a clear problem and solution must be defined.

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