【单选题】
如某线路基本轨轨距为900 mm,轨型为30kg/m,道岔应选择: 。
【单选题】
She has collected a great [填空]of foreign stamps.
【单选题】
If you multiply 3 [填空]4, you get 12.
【单选题】
I begin[填空]English five years ago
【单选题】
[填空] the condition of the engine, it is a wonder that it even starts.
【单选题】
What I meant was that we should go[填空] with the work.
【单选题】
I’ve [填空]some fruit for you.
【单选题】
How did you [填空]the show?
【单选题】
You may choose anyone from the six popular [填空] of ice cream!