filter 传入的函数可以为None.( )
filter 传入的函数可以为None.( )
I have been to many ______to look for a job, but got none.
I have been to many ______to look for a job, but got none.
The police searched everywhere in the town ______ the three criminals, but they found none.
The police searched everywhere in the town ______ the three criminals, but they found none.
Some countries are _______(丰富的石油)， while some countries have none.
Some countries are _______(丰富的石油)， while some countries have none.
How old is Ann A: None. B: One dollar. C: 100 dollars.
How old is Ann A: None. B: One dollar. C: 100 dollars.
The police searched everywhere in the town( )the three criminals, but they found none. A: on B: for C: to D: in
The police searched everywhere in the town( )the three criminals, but they found none. A: on B: for C: to D: in
How many people have died A: None. B: Twenty. C: Thousands. D: Millions.
How many people have died A: None. B: Twenty. C: Thousands. D: Millions.
He is Jack of all （）and master of none. A: trades B: businesses C: fields D: areas
He is Jack of all （）and master of none. A: trades B: businesses C: fields D: areas
The police searched everywhere in the town ( ) the three criminals, but they found none. A: of B: for C: off D: on
The police searched everywhere in the town ( ) the three criminals, but they found none. A: of B: for C: off D: on
How many pieces of baggage does the passenger have to check in ? A: Two. B: One C: None.
How many pieces of baggage does the passenger have to check in ? A: Two. B: One C: None.