when a bar of iron attracts other pieces of iron，it ____a magnet，and thus the attraction is called mangnetism.
A: will be acted as
B: acts as
C: is acted as
D: has been acted as
A: will be acted as
B: acts as
C: is acted as
D: has been acted as
举一反三
- 中国大学MOOC: when a bar of iron attracts other pieces of iron，it ____a magnet，and thus the attraction is called mangnetism.
- If people ________ quickly back then, they would have stopped today’s disasters. But they did nothing. A: had acted B: acted C: would acted D: have acted
- The period during (when) people (learned to) smelt iron is (called) (the) Iron Age. A: when B: learned to C: called D: the
- n. a piece of iron that attracts objects made of iron towards it, either naturally or because of an electric current that is passed through it A: manual B: layout C: jungle D: magnet
- 3. Ever since it was launched in 1957, the Guangzhou/Canton Fair has acted only as an export platform for China, no import business has been involved in this Fair.