问题
选择题
Nearby were two canoes ____ they had come to the island.
A．which
B．in which
C．that
D．/
答案
答案：B
搜题请搜索小程序“爱下问搜题”
Nearby were two canoes ____ they had come to the island.
A．which
B．in which
C．that
D．/
答案：B
（14分）（1）将复杂硅酸盐改写成氧化物形式：KAlSi3O8：________________
（2）除杂（括号内为杂质）：请把所加试剂和有关离子反应方程式填在空白处。
| 试剂 | 离子反应方程式 | |
| ①NaHCO3溶液（Na2CO3） | ||
| ② Fe2O3（Al2O3） | ||
| ③FeCl3溶液（FeCl2） | ||
| ④CO2（HCl） |