对变压器油进行色谱分析，规定油中溶解乙炔含量注意值为（）ppm。
A.5
B.10
C.15
D.20
参考答案：A
The report newly released urged that all children to swim. [ ]
A. should teach
B. would be taught
C. would teach
D. be taught
— You're new here, ______?
— Yes, I'm from Dujiangyan. I came here last week. [ ]
A. do you
B. don't you
C. are you
D. aren't you
