How do we know that one of the Arctic clams lived for 220 years?
We could judge by its growth rings.
举一反三
- How do we know the narrator is getting old?
- How do we communicate with one another?
- How do we know the narrator is getting old? A: No one is looking after the narrator properly. B: The narrator has lots of golden memories. C: There are strange sounds and signs of people who have lived there in the past. D: Then eighbourhood isn't what it used to be.
- How often do we hold the Olympic Games A: Every 4 years B: Every 3 years C: Every 5 years
- What do we know about the Pompeiians who lived 2000 years ago() A: They lived more or less the same as Italians now do. B: They liked women wearing all kinds of makeup. C: They enjoyed a lazy life with drinking and eating. D: They went back to Pompeii after the eruption in AD 79.
内容
- 0
We ___ there 3 years ago. A: live B: has lived C: lived D: is living
- 1
The writer and her family was lived in China one years ago._
- 2
From time to time we must look up words （）. A: the meanings of those we do not know B: whose meanings we are not familiar C: that we do not know their meanings D: whose meanings we do not know
- 3
One hundred years ago , what percentage of the human population lived in cities?
- 4
I ______ know how to swim 2 years ago.