若m、n满足|m-n|+(n+1)2=0,则m+n=______.
根据题意,得:m-n=0n+1=0,解得m=-1n=-1.故m+n=-1-1=-2.
下列词语中加点的字,注音全都正确的一项是 ( )
A.开辟(pì)卖劲(jìn)哈巴狗(hǎ)兴风作浪(xīnɡ)
B.朔望(shuò)漆黑(qī)涮羊肉(shuā)置若罔闻(wǎnɡ)
C.腼腆(tiǎn)症结(zhēnɡ)煞风景(shà)惴惴不安(zhuì)
D.载体(zǎi)挑衅(xìn)左撇子(piě)弃甲曳兵(yè)
The search was________when night came,even though the child had not been found. [ ]
A. approved
B. acquired
C. achieved
D. abandoned