题目

高铁酸钾K2FeO4是一种高效、氧化性比Cl2更强的水处理剂，工业上常用下列反应先制高铁酸钠：2FeSO4+6Na2O2=2Na2FeO4+2Na2O+2Na2SO4+O2↑，然后在低温下，在Na2FeO4溶液中加KOH固体至饱和就可析出K2FeO4，下列有关说法不正确的是（ ）A. Na2O2在反应中作氧化剂，又作还原剂B. 高铁酸钾在该温度下的溶解度比高铁酸钠的溶解度小C. K2FeO4能消毒杀菌，其还原产物水解生成的Fe（OH）3胶体能吸附水中的悬浮物D. 制取高铁酸钠时，每生成1molNa2FeO4反应中共有4mol电子转移 完形填空 　　A strange woman comes to my door one day in early March．It’s a rich area so we often have people selling things 　　1　　－dusters, make-up, frozen foods－but she doesn’t look like 　　2　　 saleswoman．She hasn’t got the patter(喋喋不休)either．She 　　3　　 smiles shyly and puts a card in my hand：“Amy Turner．Pet Portraits Undertaken．” 　　I 　　4　　 my fingernail along the cheap gold edge of the card and look at her, waiting for 　　5　　． 　　“I’ll paint any animal in the 　　6　　 of your own home,” Amy Turner says．“Wouldn’t you like a nice picture of your loved one? I’ve had 　　7　　 of dogs, cats, parrots, prize bulls…” 　　“Prize bulls!” I can’t 　　8　　 looking up and down our street．The 　　9　　 of any of my neighbours 　　10　　 bulls in their back gardens makes me smile． 　　“I don’t have any animals,” I say as we look past each other．She must be 　　11　　 some little cat or dog would come running down the hall to give the game away 　　12　　 it is the first chance I’ve had to 　　13　　 the air outside．It is one of those spring mornings when you wake up and find winter’s gone．Even the camellia in the garden 　　14　　 has flowered over-night, pink blossoms which look shocking 　　15　　 the quiet greens and greys． 　　“Why are you still in your dressing gown?” Amy says, turning her 　　16　　 back to me．“It’s nearly lunchtime．Are you ill?” 　　“I’m fine,” I 　　17　　．I’m not going to tell a stranger I’ve just been sick in the toilet upstairs and would still be 　　18　　 my fingers down my throat if the doorbell hadn’t rung．But now I’m not sure what to do next．Amy is still standing there．She doesn’t seem to think that not having a pet is a good enough 　　19　　． 　　“I’m starving,” she says and I smile politely, nodding the 　　20　　 you do before you say goodbye． (1) [　　] A． side-by-side B． little-by-little C． back-and-forth D． door-to-door (2) [　　] A． an ordinary B． a professional C． a green D． a serious (3) [　　] A． even B． ever C． just D． simple (4) [　　] A． put B． touch C． place D． run (5) [　　] A． an excuse B． a deal C． an explanation D． an opinion (6) [　　] A． interest B． comfort C． hope D． honour (7) [　　] A． experience B． pictures C． feeling D． sense (8) [　　] A． avoid B． enjoy C． help D． appreciate (9) [　　] A． idea B． thought C． sight D． touch (10) [　　] A． keeping B． selling C． buying D． training (11) [　　] A． wishing B． thinking C． meaning D． supposing (12) [　　] A． when B． and C． as D． but (13) [　　] A． smell B． breathe C． feel D． take (14) [　　] A． besides B． near C． opposite D． father (15) [　　] A． at B． with C． for D． against (16) [　　] A． mind B． eye C． attention D． heart (17) [　　] A． refuse B． agree C． tell D． lie (18) [　　] A． sticking B． lifting C． leaving D． closing (19) [　　] A． cause B． result C． excuse D． fault (20) [　　] A． direction B． way C． head D． work