问题
选择题
--- Your coat is so beautiful. It must be expensive.
--- Not really. I only _____ ￥30 on it.
A．cost
B．spent
C．paid
D．took
答案
B
同义词辨析。考查spend...on 用法。
搜题请搜索小程序“爱下问搜题”
--- Your coat is so beautiful. It must be expensive.
--- Not really. I only _____ ￥30 on it.
A．cost
B．spent
C．paid
D．took
B
同义词辨析。考查spend...on 用法。
写出下列相应物质的化学式或名称（物质类别是指单质、氧化物、酸、碱、盐）
| 物质名称 | 硝酸钾 | ______ | 氢氧化钡 |
| 化学式 | ______ | H2CO3 | ______ |
| 物质类别 | ______ | ______ | ______ |