All of these ____(perspective) are valid.
All of these ____(perspective) are valid.
The formal letter without signature is valid.
The formal letter without signature is valid.
中国大学MOOC: The formal letter without signature is valid.
中国大学MOOC: The formal letter without signature is valid.
Immigration officer will not check whether your passport and the visa are valid.
Immigration officer will not check whether your passport and the visa are valid.
A ___ in something such as a theory or argument is a mistake in it, which causes it to be less effective or valid.
A ___ in something such as a theory or argument is a mistake in it, which causes it to be less effective or valid.
A<br/>valid argument must be a sound argument, but a sound argument is not<br/>necessarily a valid argument.
A<br/>valid argument must be a sound argument, but a sound argument is not<br/>necessarily a valid argument.
He is so strong that he can lift 100 kilograms.（ ） A: N = not an argument B: A = an argument that is neither valid nor sound C: V = an argument that is valid but not sound D: B = an argument that is both valid and sound
He is so strong that he can lift 100 kilograms.（ ） A: N = not an argument B: A = an argument that is neither valid nor sound C: V = an argument that is valid but not sound D: B = an argument that is both valid and sound
The fact_________we may not be able to directly assist you does not mean your complaint isn't valid.
The fact_________we may not be able to directly assist you does not mean your complaint isn't valid.
The ______ is valid until the end of June.
The ______ is valid until the end of June.
词汇翻译（英译汉）be valid for
词汇翻译（英译汉）be valid for