Since the first Earth Day in 1970，Americans have gotten a lot "greener" toward the environment. "We didn't know at that time there even was an environment，let alone that there was a problem with it，" says Bruce Anderson，president of Earth Day USA.
But what began as nothing important in public affairs has grown into a social movement .Business people，political leaders，university professors，and especially millions of grass-roots Americans are taking part in the movement. "The understanding has increased many，many times，" says Gaylord Nelson，the former governor from Wisconsin，who thought up the first.According to US government reports，emissions （排放）from cars and trucks have dropped from 10.3 million tons a year to 5.5 tons.The number of cities producing CO beyond the standard has been reduced from 40 to 9.Although serious problems still remain and need to be dealt with，the world is a safer and healthier place.A kind of "Green thinking" has become part of practices.
Great improvement has been achieved.In 1988 there were only 600 recycling programs；today in 1995 there are about 6，600.Advanced lights，motors，and building designs have helped save a lot of energy and therefore prevented pollution.
Twenty -five years ago，there were hardly any education programs for environment.Today，it's hard to find a public school，university，or law school that does not have such a kind of program. "Until we do that，nothing else will change!" say Bruce Anderson.
（1）According to Anderson，before 1970，Americans had little idea about CC.
A．the social movement
B．recycling techniques
C．environmental problems
D．the importance of Earth Day
（2）Where does the support for environmental protection mainly come from？ AA
A．The grass -roots level.
B．The business circle.
C．Government officials.
D．University professors.
（3）What have Americans achieved in environmental protection？ DD
A．They have cut car emissions to the lowest.
B．They have settled their environmental problems.
C．They have lowered their CO levels in forty cities.
D．They have reduced pollution through effective measures.
（4）What is especially important for environmental protection according to the last paragraph？ AA
A．Education.
B．Planning
C．Green living
D．CO reduction
【答案】C；A；D；A
【解答】
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發(fā)布：2024/4/20 14:35:0組卷：3引用：5難度：0.5
相似題
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1．All routes to STEM （science，technology，engineering and mathematics） degrees run through calculus （微積分） classes.Each year，thousands of college students take introductory calculus.But only a small number ultimately complete a STEM degree，and research about why students abandon such degrees suggests that traditional calculus courses are one of the reasons.With scientific understanding and innovation increasingly central to solving 21st-century problems，this loss of talent is something society can ill afford.
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.
In Ohio，Wright State University's Engineering departments also revised math offerings.Rather than changing the content of the calculus course，they focused on preparing students for calculus by emphasizing "engineering motivation for math." The approach enhanced opportunities for students with weaker math backgrounds to succeed in engineering and doubled the average graduation rate of engineering students without reducing the average grade of graduates.Math learning is fundamental to all STEM fields，but the opposite also appears to be true.
（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
C．cancelled
D．initiated
（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.
C．Placing calculus learning in specific STEM contexts is a workable approach.
D．Removing calculus is the key to increasing graduation rate of STEM students.
（4）What does "the opposite" in the last paragraph refer to？
A．The STEM fields may be the foundation of other science subjects.
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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（1）Why did the author want to have a good appearance when she was young？
A．Because she wanted to follow the example of her friend.
B．Because she wanted to be one of the characters in the book.
C．Because she wanted to get higher scores in the job interviews.
D．Because the successful characters in the books she read were attractive.
（2）Why did the writer refer to her friend's story？
A．To show how beautiful her friend was.
B．To show how important outer beauty is.
C．To show the importance of inner beauty.
D．To show how terrible to be a beautiful girl.
（3）What does the underlined sentence in the third paragraph mean？
A．Surgery is becoming more and more popular.
B．More and more people pay attention to outer beauty.
C．More people can afford the price of doing plastic surgery.
D．The living standard has been improved over the past years.
（4）Which of the following covers the passage best？
A．Inner beauty is the real beauty.
B．How do attractive persons become successful？
C．The key factor to find a good job is being attractive.
D．Plastic surgery is the best way to make a person more beautiful.
（5）What do we know from the passage？
A．If you are too beautiful，all your friends will leave you out of envy.
B．If you have a good appearance，you must get higher scores in the job interviews.
C．Without the TV advertisements，there wouldn't have been a boom in plastic surgery.
D．Those who have good appearances should also develop the beauty in their hearts.發(fā)布：2025/1/1 18:0:1組卷：12引用：2難度：0.6 -
3．Dear Laura，
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As he saw the helmet and outfit，the look on his face was not （16）what I was expecting．Then I （17）that he had sold the motorcycle to get me the keyboard．
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I thought you'd love to （20）this story．
keyboard
Yours，
Hilary
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