定义STL容器类vector的对象v如下，则下列操作有误的是（）。vector<;int>; v(10); A: v.push_front(1) B: v[2] = 2 C: v.back() = 10 D: cout <;<; v.size()

【单选题】I came _______ my house two days ago . A back on B back to C to back D back (3.6分) A. back on B. back to C. to back D. back

在Windows中，“复制”操作的组合键是（ ）。 A: 【Ctrl】＋【Back space】 B: 【Ctrl】＋X C: 【Ctrl】＋V D: 【Ctrl】＋C

 I came _______ my house two days ago . A: back on B: back to C: to back D: back

He was walking ( ) along the corridor. A: back up B: back down C: back and forth D: back of

In the sentence “Watch each movie at least twice, back to back if possible” (Para. 7), the phrase “back to back” means “_______________.”

back to back L/C

When I _____, I will phone you. A: came back B: come back C: will come back D: comes back

By the time next year he ____ from abroad. A: will be back B: should be back C: will have been back D: is back

I will speak to him as soon as he ______. A: will come back B: is coming back C: comes back D: come back