单选题：Doctors have said that as many as 50 percent of patients do

题目内容：

Doctors have said that as many as 50 percent of patients don’t take medicine__________ directed. A．like
B．so
C．which
D．as

参考答案：

答案解析：

微粒有效径是指

微粒有效径是指A．与被测粒子具有相同沉降速度的球形粒子直径 B．与被测粒子具有相同沉降速度的球形粒子半径 C．与被测粒子具有相同大小的粒子 D．与被测粒子具有相

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质量体系文件一般主要由（　　）几部分构成。A．形成文件的质量方针和质量目标 B．质量手册 C．质量成本的构成和经济性评价 D．质量管理标准所要求的质量记录

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Before the invention of the Internet, our connections with people took place ma

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Speaker A: I had no idea the movie would end like that.Speaker B:__________ .

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Directions: You are to write in no less than 120 words on the topic of “What I a

分类：成人英语三级题型：单选题