土壤学
相似问题和答案
第1题：
Portfolio theory 投资组合理论
一种经济投资理论，讨论理性投资者如何将自己的资本分配在不同的金融资产中--也就是说，他们怎样将其资本"组合"成一种最佳搭配状态。
第2题：
A、经济论
B、控制论
C、公平论
D、博弈论
第3题：
Efficiency－wage theory 有效工资理论
根据这一理论，较高的工资会带来较高的生产率。这是因为较高的工资会使工人更健康、士气更高，且可以维持较低的人事变动率。
第4题：
Black Holes
Most scientists agree that black holes exist but are nearly impossible to locate.A black
hole in the universe is not a solid object,like a planet,but it is shaped like a sphere（球体）.
Astronomers（天文学家）think that at the center of a black hole there is a single point in
space with infinite（无限的）density（稠密）.This single point is called a singularity（奇点）.
If the singularity theory is correct,it means that when a massive star collapses,all the
material in it disappears into the singularity.The center of a black hole would not really be a
hole at all,but an infinitely dense point.Anything that crosses the black hole is pulled in by
its great gravity.
Although black holes do exist,they are difficult to observe.These are the reasons.
No light or anything else comes out of black holes.As a result,they are invisible to
a telescope.
In astronomical terms,black holes are truly tiny.For example,a black hole formed
by the collapse of a giant star would have an event horizon（视界）only 18 miles across.
The nearest black holes would be dozens of light years away from Earth.One light
year is about 6 trillion（万亿）miles. Even the most powerlul telescopes could not pick out
an object so small at such a great distance.
In 1994 the Hubble Space Telescope provided evidence that black holes exist.There
are still answers to be found,however,so black holes remain one of the mysteries of the
universe.
A:Right
B:Wrong
C:Not mentioned
第5题：
● (73)testing is the responsibility ofthe programmer, who knows exactly what is going on inside the program.
(73)
A. Acceptance
B.System
C.Black box
D.White box
第6题：
A、IS-LM理论
B、黑箱理论
C、局部均衡分析
D、一般均衡分析
第7题：
Black-box and white-box testing method ale often used in software testing phase, in which, the white-box is mainly used to test software's(73).
A．external function of a program
B．reasonableness of structure
C．internal logic of a program
D．correctness of a program
解析：本题考查专业英语应用能力和软件测试方法。软件测试的目的就是在软件系统交付运行之前，尽可能多地发现系统中的错误和缺陷。常用的软件测试方法有黑盒测试与白盒测试方法。其中黑盒测试又称功能测试，它把软件看做一个不透明的黑盒子，完全不考虑(或不了解)软件的内部结构和处理算法，它只检查软件功能是否能按照软件需求说明书的要求正常使用，软件是否能适当地接收输入数据并产生正确的输出信息，软件运行过程中能否保持外部信息(例如文件和数据库)的完整性等。而白盒测试又称结构测试，它的前提是可以把程序看成装在一个透明的白盒子里，测试者完全知道程序的结构和处理算法。这种方法按照程序内部逻辑设计测试用例，检测程序中的主要执行通路是否都能按预定要求正确工作。参考译文：黑盒测试与白盒测试方法是常被使用的软件测试方法，其中自盒测试主要用来测试软件的程序内部逻辑结构。
第8题：
Malthusian theory of population growth马尔萨斯人口增长理论
马尔萨斯首次提出的一种假设：认为人口增长的"自然"倾向快于食品供给的增长。因此，随着时间推移，人均食品生产增长率趋于下降，从而给人回增长设置了一种障碍。一般地说，这种观点认为：随着人口的收入水平和生活标准的提高，人口倾向于更快地增长。
第9题：
Black Holes
Most scientists agree that black holes exist but are nearly impossible to locate.A black
hole in the universe is not a solid object,like a planet,but it is shaped like a sphere（球体）.
Astronomers（天文学家）think that at the center of a black hole there is a single point in
space with infinite（无限的）density（稠密）.This single point is called a singularity（奇点）.
If the singularity theory is correct,it means that when a massive star collapses,all the
material in it disappears into the singularity.The center of a black hole would not really be a
hole at all,but an infinitely dense point.Anything that crosses the black hole is pulled in by
its great gravity.
Although black holes do exist,they are difficult to observe.These are the reasons.
No light or anything else comes out of black holes.As a result,they are invisible to
a telescope.
In astronomical terms,black holes are truly tiny.For example,a black hole formed
by the collapse of a giant star would have an event horizon（视界）only 18 miles across.
The nearest black holes would be dozens of light years away from Earth.One light
year is about 6 trillion（万亿）miles. Even the most powerlul telescopes could not pick out
an object so small at such a great distance.
In 1994 the Hubble Space Telescope provided evidence that black holes exist.There
are still answers to be found,however,so black holes remain one of the mysteries of the
universe.
A:Right
B:Wrong
C:Not mentioned
第10题：
B.inherit
C.connect
D.refer