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I’ve always enjoyed_____A. swimmingB. to swimC. swim

题目

I’ve always enjoyed_____

A. swimming

B. to swim

C. swim

相似考题

1.I can be a teacher. I’m not a very patient person.A. seldom B. ever C. never D. always

2.乳牙萌出的顺序为A．I→Ⅱ→Ⅳ→Ⅲ→VB．I→Ⅱ→Ⅲ→]V→VC．I→Ⅲ→Ⅱ→Ⅳ→VD．Ⅱ→I→Ⅲ→Ⅳ→VE．Ⅱ→I→Ⅳ→Ⅲ→V

3.I've always enoyed _____.A. to swimB.swimmingC.swim

4.I()looked for the meaning of words in the context.A、continuouslyB、always

参考答案和解析
参考答案：A
更多“I’ve always enjoyed_____A. swimmingB. to swimC. swim ”相关问题

  • 第1题：

    I watched Gerald for a while, but I didn't notice him ____ out of the water.

    A、swimming, come

    B、swim, come

    C、swim, coming

    D、swimming, coming


    答案：C

  • 第2题：

    I ________ always ________ that mistakes.

    A. am, making

    B. /, make

    C. will, make

    D. /, to make


    参考答案：B

  • 第3题：

    I can ( ) be a teacher. I’m not a very patient person.

    A. seldom B. ever C. never D. always


    正确答案：C

  • 第4题：

    I've _____ these lines again and again but I still keep forgetting them.

    A. gone off

    B. gone about

    C. gone over

    D. gone through


    正确答案：C

  • 第5题：

    B 宽度优先（种子染色法）

    5．关键路径

    几个定义： 顶点1为源点，n为汇点。

    a. 顶点事件最早发生时间Ve[j], Ve [j] = max{ Ve [j] + w[I,j] },其中Ve (1) = 0;

    b. 顶点事件最晚发生时间 Vl[j], Vl [j] = min{ Vl[j] – w[I,j] },其中 Vl(n) = Ve(n);

    c. 边活动最早开始时间 Ee[I], 若边I由<j,k>表示，则Ee[I] = Ve[j];

    d. 边活动最晚开始时间 El[I], 若边I由<j,k>表示，则El[I] = Vl[k] – w[j,k];

    若 Ee[j] = El[j] ，则活动j为关键活动，由关键活动组成的路径为关键路径。

    求解方法：

    a. 从源点起topsort,判断是否有回路并计算Ve;


    正确答案：

     

     

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