下列选项中,最能提示消化性溃疡发生了并发症的是:()
A.恶心、腹胀
B.常发生夜间痛
C.上腹部明显压痛
D.疼痛节律性改变
E.反酸、嗳气
参考答案:D
________ a little money, Jane was able to buy her mother a lovely new watch.
A.To save
B.Saving
C.Having Saved
D.Saved
一种汇率通常有( )位有效数字。
A.3B.4C.5D.6