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【单选题】Every year television stations receive hundreds of complaints about the loudness of advertisements. However, federal rules forbid the practice of ads louder than the programming. In addition, t...
A.
TV stations always operate at the highest sound levels
B.
their sound levels are kept around peak levels
C.
their sound levels are kept in the middle frequency ranges
D.
unlike regular programs their intensity of sound varies over a wide range
【单选题】如果小丽会说法语的话，那么她也会说英语、日语和德语。如果上述论断为真，那么以下哪一项也一定是真的？（）
A.
如果小丽不会说法语，那么她也不会说英语
B.
如果小丽不会说日语，那么她也不会说法语
C.
如果小丽会说英语、日语和德语，那么她也会说法语
D.
如果小丽会说法语和英语，那么她不会说日语和德语
相关题目：
【单选题】Every year television stations receive hundreds of complaints about the loudness of advertisements. However, federal rules forbid the practice of ads louder than the programming. In addition, t...
A.
TV stations always operate at the highest sound levels
B.
their sound levels are kept around peak levels
C.
their sound levels are kept in the middle frequency ranges
D.
unlike regular programs their intensity of sound varies over a wide range
【单选题】如果小丽会说法语的话，那么她也会说英语、日语和德语。如果上述论断为真，那么以下哪一项也一定是真的？（）
A.
如果小丽不会说法语，那么她也不会说英语
B.
如果小丽不会说日语，那么她也不会说法语
C.
如果小丽会说英语、日语和德语，那么她也会说法语
D.
如果小丽会说法语和英语，那么她不会说日语和德语
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