Passage Three What kind of minerals can we find on the ocean floor
A: Iron and copper.
B: Gold and copper.
C: Nickel and bronze.
D: Iron and bronze.
A: Iron and copper.
B: Gold and copper.
C: Nickel and bronze.
D: Iron and bronze.
举一反三
- The metals which we find in the earth _____ iron, lead and copper.
- A commutator is made of _____. A: copper bars B: nickel bars C: bronze bars D: steel bars
- ________ used to be China's hard currency in ancient times. A: Copper B: Bronze C: Gold D: Silver
- There were resources such as coal, iron, gold, and copper deep in the soil, but they remained________. A: discovered B: to discover C: being undiscovered D: undiscovered
- Metal utensils such as iron, copper, or aluminum are appropriate to prepare decoctions.