(2015•广东茂名)Mr Zhang and his wife _to the party last Sunday.
A:invited
B:was invited
C:were invited
“测量不同植被环境的空气温度和湿度”的探究实验中,对每个实测地点要测量3个数据,但记录的是这3个数据中的
The company won the bid for the project by saying that it would do the cleaning up afterwards ________.
现有A~G七种物质,已知A是赤铁矿的主要成分,E的浓溶液稀释时会放出大量的热,G溶液为蓝色,它们之间存在如图所示的转化关系: