急性胰腺炎可出现的体征为（）。
A.移动性浊音
B.黄疸
C.肠鸣音减弱
D.右上腹有时可听到血管杂音
E.全腹明显压痛
参考答案：A, B, C, E
I have always been honest and straightforward, and it doesn't matter ________ I'm talking to. [ ]
A. who is it
B. who it is
C. it is who
D. it is whom
预计2050年，北极风电向东北亚地区输电量约（）万亿千瓦时/年。
A.1.2
B.1.3
C.1.4
D.1.5
