《2025年课堂作业武汉出版社九年级英语下册人教版》

二、短篇阅读
　　Looking at the screens at night can cause us to sleep poorly, according to a US study.
　　In the evening, our bodies make melatonin(褪黑素). Melatonin makes us feel sleepy and relaxed. It's an important part of our sleep cycle. Our electronic screens prevent that cycle from working in a normal way.
　　Phones, computers and TVs make blue light. Blue light stops our bodies from making melatonin. Even just a little bit of blue light can keep your brain “awake” for another hour, according to the study. Even if you fall asleep, you may have lots of dreams. Your brain won't have a good rest.
　　It's even worse if you play an exciting game before bed. Games make our hearts beat faster, so we have a harder time falling asleep. Then, when we fall asleep, we don't get enough “deep sleep”.
1. The study in the passage tells us that if people look at the screens at night, ______.
A. their bodies make melatonin easily
B. they will be awake for an hour
C. they may have trouble in sleeping
D. their hearts beat fast and have a good rest
2. The best title for the passage should be “______”.
A. Drop the Screen Before Sleep
B. How Our Bodies Make Melatonin
C. Deep Sleep Makes Us Healthy
D. It's Hard to Fall Asleep at Night

答案： 二、1.C　2.A

一、选择填空

答案：

1. —Daddy, I don’t want to do the dishes every day!
—________ or you’ll be grounded for the weekend.
A. Watch your language
B. Not a chance
C. That’s easy
D. Sure things

答案： A

2. —Look at the cute pen containers made by Frank out of used cans! How beautiful they are!
—Yeah, he keeps taking action to protect the environment, and he’s a(an) ________ to us all.
A. director
B. inspiration
C. creativity
D. president

答案： B