有些矿石成份中含有5%以下的TiO2,对冶炼过程影响不大。
参考答案:错
From his ____ look, I knew that the questions during the interview were ______.
A.puzzling; puzzled
B.puzzled; puzzling
C.puzzling; puzzling
D.puzzled; puzzled
______ Luneng Taishan Team will win the match.[ ]
A. I sure
B. He's believed
C. He think
D. She's certain