1. (2023九下·吉林月考)  根据短文内容，判断正误。

Ancient poems, English words, historical events… you must have a lot to remember at school. What if you could have a good memory? Scientists have done a lot to find ways to improve our memories. Here are some tips based on their findings. 

Having an intense(剧烈的) workout

Scientists asked people to either ride a bike slowly for 90 minutes or do it really fast for 6 minutes. It showed that the short but intense exercise made the brain produce more of a chemical called "brain-derived neurotrophic factor( 脑源性神经营养因子)". This chemical helps people remember things quickly. Its amount(数量) goes to the highest point after six minutes of intense workout. That's the time when you should get down to remembering things!

Sleeping in a rocking bed

When we were young, we slept soundly in our mom's swaying(摇晃的) arms. Scientists have found that if we sleep in a bed that gently sways back and forth, we can have a deeper sleep, which improves our memory as well. So maybe, you could buy a rocking bed.

Becoming emotional(情绪激动的)

Emotions can have an influence on memories. The moment you become emotional, you can remember things really well. This is because the amygdala(杏仁核) in our brain is responsible for dealing with both emotions and memories. The brain wants us to remember what makes us so sad or happy. So next time you want to remember some knowledge, try to get yourself excited or angry. Then, just take out your book to learn new things!

1. （1） The passage is about how to improve our memories. 
3. （2） The brain-derived neurotrophic factor is bad for our mind. 
5. （3） Sleeping in a bed that gently sways back and forth helps us have a deeper sleep. 
7. （4） Amygdala in our brain can only be in control of our memories. 
9. （5） When you are excited or angry, you can remember things more easily.