单选题“To know something like the palm of one’s hand” means _____.Ato understand the nature of something and be competent in the performance of themBto understand everything without any questionCto understand only something easyDto be thoroughly familiar with the nature and details of something
单选题
“To know something like the palm of one’s hand” means _____.
A
to understand the nature of something and be competent in the performance of them
B
to understand everything without any question
C
to understand only something easy
D
to be thoroughly familiar with the nature and details of something
参考解析
解析：
“To know something like the palm of one’s hand”的意思是“对……了如指掌”。
“To know something like the palm of one’s hand”的意思是“对……了如指掌”。
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