–When did you ______ English? -- When I 发布时间:2017-07-03 02:29 │ 来源:www.tikuol.com 题型:选择题 问题: –When did you ______ English? -- When I was in college.A.pick upB.take upC.turn upD.put up
题型:选择题 Peter is my best friend. He often helps ______ with science.[ ]A. me B. you C. him D. her 查看答案
题型:选择题 在并发控制的技术中,最常用的是封锁方法。对于共享锁(S)和排他锁(X)来说,下面列出的相容关系中,哪一个是不正确的A.X/X:TRUEB.S/S:TRUEC.S/X:FALSED.X/S:FALSE 查看答案