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30. To understand black hioles, one needs to know about how daVV WOIKS GELISIIEEELH EE
the force that pulls ob
jects down to the ground. On another planet having gravity hat is either greater or
Objects would act_1 differently when they are thrown into the air Either
ihey would jump muceh higheran
qd come down slowerin weaker gravity, or the opposite of this happens on a
planet with higher gravity.
When it comes to light,
planet. In order to bend
For biack holes, that is precisely the case,.
As one ofthe most 3_objects in the universe, black holes give matter a one-way trip. Whatever enters a
bjack hole never 9oes out, and it remains there forever Needless to say, 4
you takeatriptoablack
hole, you will never go home again.
Hyou fellinto a black hole, what do you think would happen? All ofthe atoms in your body would be
fiattened so you would be thinner 了han your own shadow, ifyouwere able to survive the trip, there are some
scientists who think you would end upinafourth_5
一5 _,which meansa completely different universe
atogekher' What this really means is practically impossible to comprehend-
e
( 10人)(A) somewhat (8B) abruptly (C) overall (namely
(2 (2 (A) so strong as (B) as strong as (C) less Strong than
(3) (0 (A) triple (B) utmost (C) bizarre (D) sealed
侈) 和 (A) py the time (B) once (C) sinces (D) no matter how
(5) (2) (A) realm (B) existence (C) span (D) dimension
比has such ahigh Speed that it can easily break out of the gravitational pull of a
jight, the force of gravity would need to be billions oftimes 二2 _4hatofthe earth,
(D) the strongest gf
