铸铁管承受的工作压力p≤0.45Mpa时为（）压铸铁管。
A、低
B、中
C、高
D、超高
参考答案：A
照样子，改写句子。
例：鸟儿在枝头高兴地跳着。
在枝头，鸟儿高兴地跳着。
1．梅花在寒风中绽放。
2．妈妈在厨房里做饭。
— I ____ to a party, but I’ve got nothing to wear.
— Why don’t you have a dress made for the party?
A．was asked
B．will ask
C．have asked
D．have been asked
