英国歌手埃尔顿•约翰的《Sacrifice》属于主流流行歌曲。
参考答案：对
现代汽车中，采用液压挺柱可以不保留（）。
—I must thank you for taking the trouble to look after my sick mother.
—_______.
A．With pleasure
B．It doesn’t matter
C．It was no trouble at all
D．By all means
