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问题 单项选择题

肝硬化病人伴有胸腔积液，好发于哪一侧，其主要原因为

A．右侧，低蛋白血症
B．左侧，低蛋白血症
C．右侧，腹水通过胸导管进入胸腔
D．左侧，腹水通过膈淋巴管或裂隙进入胸腔
E．右侧，腹水通过膈淋巴管或裂隙进入胸腔

答案

参考答案：E

填空题

织女星距地球的距离大约是27光年，那么今天晚上看见的织女星的光是在______年前发出的．一张纸的厚度为75μm=______nm．
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补全对话，情景问答
从方框中选择适当的选项补全对话，使对话完整通顺。
A. Are there any computers in your classroom?
B. It's behind Tony's.
C. There isn't a television in my classroom.
D. How many students are there in your class?
E. It's on the teacher's desk.
F. Yes, there are.
G. No, there aren't.
A:  (1) ______
B:  There are forty-eight, that's twenty-four boys and twenty-four girls.
A:  (2) ______
B:  Yes, there is only one. (3) ______
A:  Are there any pictures on the walls of your classroom?
B:  (4) ______ There are four pictures.  
A:  Where is your desk?
B:  (5) ______
1.____ 2.____ 3.____ 4.____ 5.____
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