—How are you getting on with your business? —I’m glad to say it is _____. A. turning up B. picking up C. breaking up D. taking up
—Must I hand in my homework now? —No, you ________.You can hand it in tomorrow. A. mustn’t B. can’t C. needn’t D. shouldn’t
命题“三角形中最多有一个内角是钝角”的否定命题是A.有两个内角是钝角 B.有三个内角是钝角C.至少有两个
She is _____ wise, but he is _____ foolish.A. fairly; fairlyB. rather; fairlyC. fairly; ratherD. so; much
如果一个三角形的三边长分别为1,k,3,则化简的结果是( ) A.﹣5 B.1 C.13 D.19﹣4k
下面有关生物实验的叙述中错误的一组是( ) ①将糖尿病病人的尿液加入斐林试剂,混匀后呈现砖红色沉淀 ;②用显微镜观察根尖细胞有丝分裂
单项填空。Please call us when you are ________.A.in trouble B.in help C.get trouble D.in hope
下列选项说明乙醇作为燃料的优点是( ) ①燃烧时发生氧化反应 ②充分燃烧的产物不污染环境 ③乙醇是一种再生能源 ④燃烧时放出大量热量A.