【单选题】–Would you mind my ________ here? --Sorry, I’m afraid you can’t. Lily is here.
【简答题】利用Na 2 C 2 O 4 标定KMnO 4 溶液时,为了加快反应速度,反应必须在______温度下进行,并以______控制酸度,利用反应生成的______作为催化剂,利用______作为指示剂,终点时溶液呈现______色。
【简答题】有以下程序 fun(int x, int y) { static int m=0, i=2 i+=m+1 m=i+x+y return m } main() { int j=1,m=1,k k=fun(j,m) printf('%d,',k) k=fun(j,m) printf('%d/n',k) } 执行后的输出结果是 A)5,5 B)5,11 C)11,11 D)11,5
【单选题】Why do you have to ______ adhere to such out-dated ideas?
【单选题】_____ heavy snow! I’m afraid you can’t go roller-skating outside.
【简答题】在H 2 SO 4 介质中,基准物Na 2 C 2 O 4 0.2010g用于标定KMnO 4 溶液的浓度,终点时消耗其体积30.00ml。则标定反应的离子方程式为();C(KMnO 4 )=()mol/L.
【简答题】2) In a job interview, why do you have to answer question after question? We have to do that because we must show the interviewer that we are _______________ for the job.
【单选题】--- Can I help you, sir? ---I’m afraid you can’t. I have my students’ papers________.
【单选题】---“Why do you have to be there at six?” ---“The teacher demands that everyone _____in his seat at six.”
【单选题】— ______ I have some more cake? — No, I’m afraid you can’t.