以上请示事项(),即请批复。
A、如有不妥
B、如无不妥
C、当否
D、可否妥当
参考答案:C
. Sales of CDs have greatly increased since the early 1990s, when people ________ to enjoy the advantages of this new technology.
A.begin
B.began
C.have begun
D.had begun
以下恶性高血压的描述不正确的为()
A.视网膜动脉栓塞
B.视网膜出血
C.多见于中青年
D.尿中可见管型
E.可伴左心衰竭