The metals which we find in the earth _____ iron, lead and copper.
举一反三
- Which of the following metals is environmental friendly? A: iron B: aluminum C: copper D: titanium
- 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.
- What can we add to brass to improve machining: A: Tin B: Copper C: Lead D: Manganese E: Carbon nanotubes
- Metal utensils such as iron, copper, or aluminum are appropriate to prepare decoctions.
- Of the more common elements(元素) are hydrogen, oxygen, carbon, iron, copper, etc.