伤寒与副伤寒为乙类传染病，其传播方式为（） A.通过污染的空气_爱下问搜题

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问题单项选择题 A型题

伤寒与副伤寒为乙类传染病，其传播方式为（）

A.通过污染的空气传播

B.通过污染的食物、水经口传播

C.通过病人的密切接触传播

D.通过血液传播

E.通过共用毛巾、牙刷等物品传播

答案

参考答案：B

解析：伤寒与副伤寒是一类肠道传染病，一般通过污染的水与食品进行传播。

完形填空

完形填空。

     Tom is from Canada. He is twelve  1 . Now he is in Beijing Ren'ai International  2 . He is in  3 , Grade
Seven.  4 phone number is (010) 9758-6296. Minmin is  5 China. Her  6 name is Ann. She is twelve,  7 .
8 phone number is (010) 9272-5322. They are not in the same  9 ,  10 they are good friends. They like
their (他们的) school.

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C. year olds
C. schools
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C. He
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C. to
C. She
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C. then (那么)

单项选择题

关于实性肿瘤声像图特点下列哪项是错误的()

A．边界均不整齐、不光滑或不规则

B．外形常呈圆形、椭圆形或不规则

C．内部出现回声

D．可有后方组织衰减或声影，少数回声增强

E．侧方声影可有可无