A:踯躅(zhú)入殓(liǎn)鬈(juǎn)发驯服(xùn)
B:按捺(nài)古冢(zhǒng)忧悒(yì)宿愿(sù)
C:黏泥(nián)蹒跚(shān)痉挛(jìng)虬曲(qiú)
D:创伤(chuàng)惬意(qiè)赝品(yàn)缱绻(qiǎn)
指出下列四条食物链中,正确的是( )
— _________ do you have an Art Festival in your school? — Once a year.
集合{x|﹣1≤x<0,或1<x≤2}用区间可表示为____