5 颗豆豆
1. 单选题
20 秒
What things can't make us sneeze?
dust
allergies
milk
common cold
2. 单选题
20 秒
What lines inside of your nose?
flies
dust
plants
tidy hairs
3. 单选题
20 秒
What can sticky hair and tidy hairs do?
They can make you sneeze.
They can trap particles.
They can help particles.
They can make you feel bad.
4. 单选题
20 秒
Messages __________ to the brain.
get rid of
get into
get fired off
get involved
5. 单选题
20 秒
Your brain tries to _____ the junk in your nose.
get fired off
get up
get rid of
get involved