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burden on my mind.
For days,I avoided entering the lab.Uneasy feelings welled up inside me.I felt I was totally
unfit for scientific work and even thought about quitting the field.Just then,my professor came to me.
"Science never rewards precipitancy,"he said."Safety rules are not just words on paper.
They protect you and everyone working beside you."His gentle yet powerful words stayed in my
mind and finally woke me up from despair.
I made up my mind to start over with a new attitude.From then on,I followed every operation
step strictly and checked all equipment repeatedly.I learned to slow down and stay fully focused
instead of blindly rushing for progress and eventually,I achieved my academic dream.
24.What can we know about the author from the first two paragraphs
A.He prioritized quick academic gains.
B.He performed better than his classmates.
C.He lacked experience in conducting experiments.
D.He earned the professor's trust in a Ph.D.program
25.How did the author probably feel about the accident
A.Regretful and bored.
B.Helpless and lonely.
C.Guilty and discouraged.
D.Annoyed and defensive.
26.What does the underlined word "precipitancy"in paragraph 5 probably mean
A.Total obedience to basic rules.
B.Overestimation of professional skills.
C.Strong eagerness for speed.
D.Carelessness caused by tiredness.
27.What is the main idea of the text
A.Strict safety rules are essential in labs.
B.A lab accident reshaped the author's attitude.
C.Constant hard work led to the author's success.
D.Timcly guidance is decisive in students'performance.
C
Monkeys fitted with brain-computer interfaces(BCIs)-technology that enables humans or
animals to operate equipment and computers with their thoughts-have successfully finished diverse
navigation tasks in various complex virtual environments through brain signal control.
Peter Janssen from Belgium and his team implanted (BCIs into three monkeys.
Crucially,each monkey received three implants containing 96 sensors in total,placed in three key
brain regions.One area manages voluntary physical movements,while the other two are in charge of
movement planning and organization.An AI model reads electrical signals collected by the sensors
and translates them into orders to control virtual characters and objects in 3D virtual environments.
In the experiments,the monkeys managed to control a virtual ball from a fixed perspective and
operate virtual monkey figures from a third-person view,just like players do in computer games.In
further tests,the monkeys even navigated virtual buildings,opening doors and moving freely
between rooms.
Most earlier BCI tests on human participants required users to imagine specific physical
movements,such as lifting or lowering a finger,to control on-screen pointers.However,Janssen's
new sensor arrangement helps establish a more advanced and natural movement connection."We
cannot ask the monkeys for feedback,yet the new approach allows them to control computers in a
more natural manner,Janssen explains.He also notes that most BCI devices on the market feel
awkward and frustrating for human users,who often compare the experience to "trying to move your
ears",and that it usually takes months to get used to them.
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