心血管外科手术后急性肾衰竭的早期临床表现()
A.顽固性酸中毒
B.尿量减少或无尿
C.血BUN、Cr明显增高
D.血K持续增高
E.尿比重>1.020
参考答案:A, B, D
He made ____clear when he would give us a lecture on global warming.
A.this
B.it
C.that
D.these
The woman rushed out she felt the house shaking.
A.until
B.immediately
C.unless
D.before