GMAT考试资料：GWD试题合集（七）.

　　以下将为正在备战GMAT考试的同学们整理一些经典的GMAT阅读试题，并分多个合集推出，希望能够为正在备考GMAT考试的考生提供或多或少的帮助。

　　4. GWD-4-Q35 to Q37暗银河系的发现及其科学意义

　　In addition to conventional

　　galaxies, the universe contains

　　very dim galaxies that until

　　Line recently went unnoticed by

　　(5) astronomers. Possibly as

　　numerous as conventional gal-

　　axies, these galaxies have the

　　same general shape and even

　　the same approximate number

　　(10) of stars as a common type of

　　conventional galaxy, the spiral,

　　but tend to be much larger.

　　Because these galaxies’

　　mass is spread out over

　　(15) larger areas, they have far

　　fewer stars per unit volume

　　than do conventional galaxies.

　　Apparently these low-surface-

　　brightness galaxies, as they

　　(20) are called, take much longer

　　than conventional galaxies to

　　condense their primordial gas

　　and convert it to stars—that is,

　　they evolve much more slowly. 暗星系的发现及其特征

　　(25) These galaxies may

　　constitute an answer to the long-

　　standing puzzle of the missing

　　baryonic mass in the universe.

　　Baryons—subatomic particles

　　(30) that are generally protons or

　　neutrons—are the source of

　　stellar, and therore galactic,

　　luminosity, and so their numbers

　　can be estimated based on how

　　(35) luminous galaxies are. How-

　　ever, the amount of helium

　　in the universe, as measured

　　by spectroscopy, suggests

　　that there are far more baryons

　　(40) in the universe than estimates

　　based on galactic luminosity

　　indicate. Astronomers have

　　long speculated that the missing

　　baryonic mass might eventually

　　(45) be discovered in intergalactic

　　space or as some large popu-

　　lation of galaxies that are difficult

　　to detect. 此发现的应用

　　现象解释

　　逻辑简图：

　　1P: in addition to conventional, dim until recently went unnoticed….. these have same, same, but spiral larger. Because, evolves much more slowly.

　　2P: constitute an answer to puzzle.. baryons can be estimated… however, suggests far more baryons than estimates. Astronomers speculated …..

　　以上就是本期GMAT试题的所有内容，考生可以此为据并进行针对性的练习，逐步掌握GMAT阅读的解题规律及技巧，以达到迅速提高GMAT考试成绩的目的。 相关链接：

1.GMAT考试资料：GWD试题合集（六）

2.GMAT考试资料：GWD试题合集（五）

3.GMAT考试资料：GWD试题合集（四）

想要获得更多咨询服务点击进入 >>>>有问题?找免费的澳际专家咨询! 或联系QQ客服： ，也可以通过在线咨询处留言，把您最关心的问题告诉我们。