GRE各科考点

GRE考试马上就要到来了。下面小编就带着大家一起看一下GRE考试各科的考点吧，希望可以给大家带来帮助。

1.青蛙内外和分子内外题coincide...differ。

分子的相似和外表的相似does not necessarily____, for example,几乎所有的青蛙都长的差不多, but他们的内部分子是____。

2.青蛙/蜥蜴/两栖动物皮肤和毒物题permeable/porous...absorbed。

青蛙/amphibian的皮肤是如此的____，所以大自然中的有毒物怎样____皮肤毒害青蛙。

一种蜥蜴extinct是因为他们的皮如此的____,以至于很容易____poisonous gas.

【注解】amphibian:两栖动物. permeable:可渗透的porous:多孔的,可渗透的。

3.人的眼睛聚焦细节能力把周围转为背景题focus on...background。

The human eyes have the ability to ____on object. So when it happens, theenvironment will diminish to____.

4.苍蝇死而复生对野营者骚扰题resurgence。

一个地方已经很多年没有受到什么(mxx)fly害虫骚扰了,但(mxx)fly最近变多了，导致了很多camper很不爽，指责the____of the fly is due to the purification of 当地的水源。

5.萤火虫发光和人造光能源效率比较题outstrips...rivals/ approach。

Natre's energy efficiency often____human technology: despite the intensity of the light fireflies produce,the amount of heat is negligible;only recently have humans developed chemical light-producing system whose efficiency____the firefly's system.

【注解】engender:[v]产生,导致,生育manipulate:[v]操纵outstrip:[v]比...跑得快,超过。

rival:[v]竞争,与...匹敌inhibit:[v]抑制禁止approach [v]接近,近似。

Distributive Law

Like real number, when multiplying a sum or difference of terms, the

distributive property of multiplication allows us to distribute the multiplying

term among the terms being added or subtracted.

Example:

3*(2x+y)=3*2x+3*y,

3a*(2x+y)=3a*2x+3a*y,

3x*(2x+y)=3x*2x+3x*y.

(3x+4)*(2x+y)=(3x+4)*2x+(3x+4)*y=3x*2x+4*2x+3x*y+4*y.

Remember:

Do not forget to multiply all the terms inside the parenthesis.

For division, the sum and difference in the numerator can be.

distributed:(x+y)/(2x+y)=x/(2x+y)+y/(2x+y).

For division, the sum and difference in the denominator cannot be.

distributed :(x+y)/(2x+y)≠(x+y)/2x+(x+y)/y.