（网站）background-color：#ccc；background-image：url（bg.png）；background-repeat：no-repeat；background-position：-100pxcenter；以上样式的缩写正确的是？（） A: background：#ccc，url（bg.png）no-repeat，-100pxcenter； B: background：#cccurl（bg.png）no-repeat-100pxcenter； C: background：#ccc；background-image：url（bg.png）no-repeat-100pxcenter； D: background-color：#ccc；background-image：url（bg.png）no-repeat-100pxcenter；

repeat方法描述正确的是（） A: hello’.repeat（2）//"hellohello" B: na’.repeat（0）//"na" C: na’.repeat（2.9）//"nanana" D: na’.repeat（Infinity）//"nana......"

Would you mind ____ that back to me? A: repeat B: repeating C: to repeat

Would you mind ________________that? A: to repeat B: repeating C: repeat D: repeated

There is nothing to do but ______ the experiment. A: to repeat B: repeating C: repeats D: D. repeat

以下程序段哪段是正确的（） A: declare id int default 0; repeat set id=id+1; end repeat;<br> until id>=10; B: declare id int default 0; repeat set id=id+1; end repeat;<br> until id>=10 C: declare id int default 0; repeat set id=id+1; until id>=10 end repeat; D: declare id int default 0; repeat set id=id+1; until id>=10; end repeat;

Listen and repeat

One need repeat the previous period when playing to the repetition mark, that is, repeat the performance once more.

下述程序段中， 与其他程序段的作用不同。 A: k=1; while (1) { s+=k ; k=k+1 ; if (k>100) break ; } printf(“\n%d”,s) ; B: k=1; Repeat : s+=k ; if (++k<=100) goto Repeat printf(“\n%d”,s) ; C: int k,s=0; for (k=1;k<=100;s+=++k); printf(“\n%d”,s) ; D: k=1; do s+=k; while (++k<=100) ;printf(“\n%d”,s) ;

repeat the same actions