面色晦暗、双颊紫红、口唇轻度发绀的面容是
A.二尖瓣面容B.伤寒面容C.肝病面容D.肾病面容E.肢端肥大症面容
参考答案:A
.There was a nice little present for everyone, with a suitable card_____.
A.attached
B.attaching
C.to attach
D.being attached
将铁屑进行如下处理,最后得到的残渣主要含有( )
A.FeO
B.Fe2O3
C.Fe(OH)2
D.Fe(OH)3