A:CO2
B:Cl2
C:HCl
D:NH3
We stayed at a very nice hotel. But I can't remember _________ name of it.
阅读下面的话,再完成练习
小英在大家注视的目光中,终于一摇一晃地走上了讲台。就在小英刚刚站定的那一刻,不知是在谁的带动下,聚然间响起了一阵掌声
仰光大金塔位于下面哪个国家( )
毫无疑问,懂得一些急救知识很有必要,因为危险无处不在。
____ ____ ____ ____ that it is necessary to know some knowledge of first aid as dangers lie everywhere.