As the player hurt his arm, he had to drop of the game.
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多項選擇題
Li Na started her sporting life () a badminton racket in her hand at age six.
Li Na started her sporting life () a badminton racket in her hand at age six.
A.in
B.with
C.on
D.at
單項選擇題
根據(jù)下列物質(zhì)中 S 的氧化數(shù)判斷,下列說法中錯誤的是()
根據(jù)下列物質(zhì)中 S 的氧化數(shù)判斷,下列說法中錯誤的是()
A.H 2 SO 4 具有氧化性
B.H 2 SO 3 具有還原性
C.H 2 S 具有氧化性
D.H 2 S 具有還原性