搜题请搜索小程序“爱下问搜题”
问题 选择题

向一定量的NaOH溶液中逐滴加入AlCl3溶液，生成沉淀Al(OH)3的量随AlCl3加入量的变化关系如图所示。则下列离子组在对应的溶液中一定能大量共存的是

[ ]

A．a点对应的溶液中：Na+、Fe3+、SO42-、HCO3-

B．b点对应的溶液中：Na+、S2-、SO42-、Cl-

C．c点对应的溶液中：Ag+、Ca2+、NO3-、CH3COO-

D．d点对应的溶液中：K+、NH4+、I-、CO32-

答案

答案：B

阅读理解

My name is Wu Dong. I’m a worker in a big shop. I don’t work in the morning. I only work at night(夜里). Every morning I come home at about half past six. I have breakfast at seven. After breakfast I go to bed(上床睡觉). I get up at about half past two. I have lunch at a quarter to three and have supper at twenty to eight. Then I go to work at a quarter past eight. I start(开始) to work at nine. I look after the shop every night. I like my work very much.

根据短文内容，判断正(T)误(F)。

小题1:Wu Dong works in the morning.

小题2:Wu Dong goes to bed at 6:30 in the morning.

小题3:Wu Dong works at 12 o’clock at night.

小题4:Wu Dong goes to work at 8:15 in the evening.

小题5:Wu Dong doesn’t like his work because(因为) he looks after the shop every night.
查看答案
名词解释

大流士
查看答案