单选题：回答题：In July 1994 Jupiter，the largest planet in our solar sy

回答题：
In July 1994 Jupiter，the largest planet in our solar system，was stuck by 21 pieces of a comet(彗星)．When the fragments(碎片)landed in the southern part of the giant planet，the explo-sions were watched by scientists here on earth．But what if our own I lanet was hit by a comet?
he year is 2094．It has been announced that a comet is heading awards the Earth．Most of it will miss our planet，but two fragments will probably hit the southern part of the Earth．The news has caused panic．
On 17 July．a fragment four kilometres wide enters the Earth’s al mosphere with a huge explosion．About half of the fragment is destroyed．But the major part survi yes and hits the South Atlan-tic at 200 times the speed of sound．The sea boils and an enorrnous、cave is created and spreads．The wall of water rushes towards southem Africa at 800 kilometres ar}hour．Cities on the Africancoast are totally destroyed and millions of people are drowned．The wave moves into the IndianOcean and heads towards Asia．
Millions of people are already(lead in the southern part of the Earth．but the north won’t escape for long．Tons of broken pieces are thrown into the atmosphere t y the explosions．As the sunis hidden by clouds of dust，temperatures around the world fall to air Lost zer0．Crops are ruined．Wars break out as countries fight for food．A year later civilization h a‘collapsed．Nt)more than l0million people have survived．
Could it really happen?In fact．it has already happened more th m once in the history of the Earth．The dinosaurs(恐龙)were on the Earth for over 160 million．'ears．Then 65 million yearsago they suddenly disappeared．Many scientists believe that the Earth was hit by a space fragment．The dinosaurs couldn’t survive in the cold climate that followed and{hey became extinct．Will we meet the same end?
Which of the following is NOT TRUE according to the author’s discription　of the disaster in 2094? A．The whole world becomes extremely cold．
B．All the coastal cities in Africa are destroyed．
C．The whole mankind becomes extinct．
D．The visit of the comet results in Wars．