替换测试 Group 1

Q1:Bats find their way in the absence of light. Bats are not the only creatures to face this difficulty today.

Q2:Our mammalian ancestors managed to survive.

Q3:Given that there is a living to be made at night, and given that alternative daytime trades are thoroughly occupied, natural selection has favored bats that make a go of the night-hunting trade.

Q4:Weapons designers adapted this technique for the detection of submarines.Second world war relied heavily on these devices.

Q5:Engineers had already built instruments to exploit the principle, for example to measure the depth of the sea under a ship.

Q6:Donald Griffin coined the term ‘echolocation’ to cover both sonar and radar, whether used by animals or by human instruments.

Q7:Water infrastructure must be built to higher specifications and with more accountability to local people and their environment.

Q8:Governments should maintain ownership of water infrastructure.

Q9:We often remember what we have perceive peripherally, long after we have forgotten what we set out to learn.

Q10:The teaching activities are similar to those used in conventional classes.

Q11:恭喜你成功完成了本次练习！最后，你是否愿意继续参与下一次同样形式的打卡活动呢？