DNA studies have _____ the surprising fact that we probably all come from a single group of around 2 000 humans.
A: meant
B: revealed
A: meant
B: revealed
举一反三
- All humans around the world have learned to use their bodies the same.
- People from all around the world have come to add a coat of paint to the ball, which is even mentioned in Guinness World Records.
- The fact is that we have spent all our money. __________
- Identity can be defined as_________.（ ） A: How we see and imagine ourselves B: Where we come from C: How other people see us D: A quality only humans have
- However, results from several small studies in humans have yielded inconclusive evidence of a beneficial _____ of ascorbic acid on lead toxicity.