题目内容
Please be ___________ (小心的) when you cross the street.
The Tianwen series will carry out the first Mars exploration mission (火星探测任务) in 2020, and Tianwen, from a long poem written by Qu Yuan, has been widely accepted ________ the public.
A.between B.among C.from
—________ does it take to get to Wuyi Square from here?
—At least 20 minutes.
A.How often B.How long C.How soon
— What are you doing?
— I’m talking with my pen pal on the Internet. She wants to know ________.
A.how’s the weather here
B.what my favorite sport is
C.what school rules do we have
— Mum, this is very yummy. Can I have ________ cup?
— I am afraid not. Drinking too much ________ is bad for your health.
A.the other; juice B.another, milk C.another, juice
Have you ever forgotten where your socks are when you wake up in the morning? Can you remember what you ate for lunch a week ago? You may think that being forgetful is not a good thing. But now you should be thankful.
Scientists from University of Toronto found that forgetting actually is a key part of learning. Getting rid of (除去) unnecessary information can help our brains work better.
What kind of information is unnecessary? Scientists say that this may have something to do with the environment you live in.
In an environment that is always changing, our brains may require us to remember less. For example, a supermarket cashier (收银员) meets many people every day and will probably only remember them for a short time. But a designer (设计师) who often meets his or her clients (客户) will remember longer.
“That’s because our brains keep making new neurons (神经元) from stem cells (干细胞). ”said Paul Frankland, a professor at the University of Toronto.
There is a special area in our brains called hippocampus (海马体). It is important for us to learn and remember. When new neurons fit in the hippocampus, they renew our old memories. This could explain why you forget so much information about the time when you were very young.
However, being forgetful is not always good. When you don’t have enough sleep, you may have a hard time remembering new information. Sleep helps the brain store and keep new facts and information. Matthew Walker from the University of California told the Huffington Post.
根据短文内容，选择最佳选项，并在答题卡上将选定答案的字母标号涂黑。
1.Scientists found that forgetting things can help .
A.keep making new neurons B.our brains work better
C.change the environment D.have a good sleep
2.We may in an environment that is always changing.
A.remember more B.remember less
C.sleep better D.sleep worse
3.According to the passage, the underlined word This refer to (指的是) .
A.making new neurons from stem cells
B.learning and remembering new things
C.new neurons’ renewing our old memories
D.getting rid of unnecessary information
4. helps the brain store and keep new facts and information.
A.Having enough sleep B.Changing environment
C.Neurons’ fitting in the hippocampus D.Working hard
5.What is the best title of the passage?
A.How to remember new information
B.How to forget things easily
C.Sleeping is important.
D.Forgetting is not bad.
Michael was playing basketball with his friends _____ his brother was listening to music.
A.after B.while C.before D.because
—I enjoy myself reading in this afternoon. —It sounds relaxing.
A.lazy B.terrible C.slow D.busy
________ of you should try your best to rush to the finishing line. Come!
A.Neither B.Either C.All D.Other
