【单选题】— I hear that Jack had a car accident yesterday. — I won't believe it. He ______.
A.
shouldn't have been so careless
B.
wouldn't be so careless
C.
couldn't be so careless
D.
mustn't be so careless
【单选题】He won't believe it____he sees it with his own eyes.
【单选题】下列钢中,适于用来制造高速成形切削刃具(如车刀)的钢是
【单选题】He won't believe anything _________ he sees it with his own eyes.
【简答题】根据句意及首字母或汉语提示完成单词。 1. I won't believe it until I see it with my o______ eyes. 2. My parents tell me not to c______ other's homework. It's bad for study. 3. Tom was really l______ to get the singer st...
【判断题】摄入量的不足是导致维生素缺乏症的唯一原因。
【判断题】摄入量的不足是导致维生素缺乏症的唯一原因。
【单选题】高速钢螺纹车刀,容易磨得锋利,而且韧性较好,因而适用于()车削。
【多选题】高速钢用于高速切削的刃具,如钻头、车刀,下列说法不正确的有()。