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【单选题】
20 世纪 80 年代后期 , 中国科学院开展了我国土地资源生产能力及环境人口容量研究工作。若以年人均消费粮食 500 千克、 550 千克和 600 千克三个方案测算 , 我国耕地资源可承载人口极限分别为 16 . 6 亿、 15 . 1 亿、 13 . 8 亿。如按美国的消费水平 , 我国人口应控制在 7 亿之内。据此完成第 19~20 题。 下列说法正确的是 ( )A.
我国目前人口已大大超过环境人口容量
B.
我国的人口合理容量在 16 亿左右
C.
我国人口约为 14 亿 , 与环境关系属良性循环 , 人口与资源之间几乎没有矛盾
D.
从材料可看出环境人口容量具有不确定性
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【简答题】写出下列标准代号的含义: GB/T( )
【单选题】听力原文： Around the year 1000 A. D. , some people from northwest India began to travel west wards. Nobody knows why. After leaving their homes, they did not settle down again but spent their lives moving...
A.
They liked traveling.
B.
The reasons are unknown.
C.
They were driven out of their homes.
D.
They wanted to find a better place to live in.
【单选题】听力原文： Around the year 1000 A. D. , some people from northwest India began to travel westwards. No- body knows why. After leaving their homes, they did not settle down again but spent their lives movin...
A.
They liked traveling.
B.
The reasons are unknown.
C.
They were driven out of their homes.
D.
They wanted to find a better place to live in
【单选题】Why does the author say "many more students should be attending technical schools or two-year colleges" (Para. 5)?
A.
Students sometimes waste too much time at college.
B.
Students don't want to invest money at college.
C.
Students are often unrealistic and unprepared.
D.
Students will get more chances to find a job.
【单选题】If the motion is "cellphones should be banned during class", which one of the following is an example of evaluative argumentation?
A.
Cellphones should not be banned during class, because cell phones can be a great source of information and a great learning tool. Of course if used in a proper way. Teachers can include them as a tool and even provide apps for the students to use together as a class.
B.
Cellphones should be banned during class, because students should learn the old fashion way, without any use of technology because this is the best way to learn. Writing, calculus and other basic sciences should be learned as a basic for everything else without any technology.
C.
Cellphone should be banned during class, because they can put off radiation, which means that cell phones can cause brain tumors or acoustic nueromas (Colipie). If students are allowed to use their cell phone during school it will make it easier of a chance for kids to get some type of cancer.
D.
Cellphones should not be banned during class, because banning them will not stop them being used – it will simply push that use underground. Much better for the device to be visible on the desk than hidden under it. This way, teachers will know if the mobiles are being used outside of learning.
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