Everybody hates rats.But in the earthquake capitals of the world - Japan，Los Angeles，Turkey - rats will soon be man's new best friends.
What happens after an earthquake？We send in rescue dogs.Why？Because they can smell people.Dogs save lives.They help rescuers to find living people.But dogs are big and they can't get into small spaces.So now a new research project is using a smaller animal to save lives：the rat.
How does it work？First，the rat is trained to smell people.When this happens，the rat's brain gives a signal.This is sent to a small radio on its back，and then the rescuers follow the radio signals.When the rat's brain activity jumps，the rescuers know that someone is alive.The rat has smelled that person.
Although there are already robots which can do this job，rats are better.Christian Linster at Cornell University，New York，says，"Robots' noses don't work well when there are other smells around.Rats are good at that." Rats can also see in the dark.They are cheaper and quicker to train than dogs，and unlike robots，they don't need electricity!
The "rat project" is not finished，but Julie Ryan of International Rescue Corps in Scotland says， "It would be fantastic.A rat could get into spaces we couldn't get to，and a rat would get out if it wasn't safe." Perhaps for the first time in history，people will be happy to see a rat in a building （but only after an earthquake，of course）.
（1）In the world earthquake capitals，rats will become popular because they can DD.
A．get into small spaces
B．take the place of man's rescue jobs
C．find food for survivors trapped in buildings
D．find the position of survivors trapped in buildings
（2）From the third paragraph we know rescuers can judge a person is alive by CC.
A．the noise made by the rat
B．the rat's unusual behaviour
C．the signal sent by the radio on the rat
D．the smell given off by the person trapped
（3）After reading the passage we know that now AA.
A．people still use dogs and robots in rescue work
B．the "rat project" has been completed already
C．rats have replaced dogs in searching for people
D．people are happy to see a rat in a building
（4）The main idea of the passage is about BBin an earthquake.
A．dos and don'ts
B．the role rats will play
C．ways of rescuing people
D．the reason for not using dogs
【答案】D；C；A；B
【解答】
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發(fā)布：2024/5/27 14:0:0組卷：9引用：7難度：0.7
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Math departments alone are unlikely to solve this dilemma.Several of the promising calculus reforms were spearheaded by professors outside of math departments.STEM faculty are prioritizing cooperation across disciplines to transform math classes to cultivate a diverse generation of STEM researchers and professionals.
This is not uncharted territory.In 2013，life sciences faculty at the University of California，Los Angeles，developed a two-course sequence that covers classic calculus topics，but also emphasizes their application in a biological context.Creating this course，Mathematics for Life Scientists，wasn't easy.The life sciences faculty involved，none of whom had a joint appointment with the math department，said they turned to designing the course themselves after math faculty rejected their request for cooperation.
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（1）What problem is mentioned in paragraph 1？
A．Increasing STEM dropout rate.
B．The reform of calculus courses.
C．Shrinking admission to STEM majors.
D．The shaken belief in the role of calculus.
（2）What does "spearheaded" in paragraph 2 probably mean？
A．challenged
B．evaluated
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（3）What do we know about the calculus course reform according to the text？
A．STEM departments made calculus content easier to improve students' grades.
B．Math departments sought cooperation with STEM counterparts to urge reforms.
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D．Removing calculus is the key to increasing graduation rate of STEM students.
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B．The STEM fields may be central to making math learning effective.
C．Math learning may set barrier for science study in the STEM fields.
D．Math learning may make way for science study in the STEM fields.發(fā)布：2025/1/1 17:30:2組卷：24引用：3難度：0.5 -
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A．Inner beauty is the real beauty.
B．How do attractive persons become successful？
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D．Plastic surgery is the best way to make a person more beautiful.
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keyboard
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