下列实验操作正确的是[ ]
A.
B.
C.
D.
答案:D
“知屋漏者在宇下,知政失者在草野”。是的,如果主政者井蛙观天,孤陋寡闻,视世情必______,察时势则______,一不小心就会压抑活力,积攒怨气。 填入划横线部分最恰当的一项是( )。
A.管窥蠡测 如坐云雾B.管中窥豹 不知所以C.盲人摸象 如梦初醒D.洞若观火 如堕烟海
Never before ________ to ________ what his parents expect of him more than it is today. [ ]
A. he has failed; live up to
B. he failed not; come up with
C. has he failed; live up to
D. did he failed; come up with