Whatyou'relearningtodayseemsuseless，but

問題詳情：

What you're learning today seems useless，but ______ it will surely have significant influence on your development．（　　）

A．on average  B．in the long run

C．in exchange       D．by all means

【回答】

B

知識點：詞組 短語

題型：選擇題