AT型弹性可弯式尖轨是一种不补强的普通钢轨断面尖轨。
参考答案：错
— What do you think is ______ to happen tomorrow?
— Sorry, I don’t know.
A．likely
B．possible
C．probably
D．perhaps
《儿童权利宣言》是世界性的，具有法律效应的文件。
