Reading passages

Sahara 
may 
prove 
useful 
in 
the 
future 
because…… .
A) It is growing and expanding towards the south 
B) there are large amounts of necessary minerals
there
C) it may be uniting with Nigeria and other countries
D) it may be used to irrigate neighbouring countries 
E) it will probably continue to remain uninhabited 
Relativity is the name for two theories of physics 
presented by Albert Einstein in 1905 and 1915 
respectively, as the Special and General Theories of 
Relativity. Through them he showed that speed and 
position are relative things and that there are no 
absolute measurements for time and space. He also 
stated that matter and energy are interchangeable, a 
concept that has had considerable bearing on the 
development of nuclear physics. In this century, 
Einstein's Theories of Relativity have revolutionised 
ideas about the nature of matter and the universe, as 
Sir Isaac Newton's laws of gravity had done to 
scientific thinking two centuries earlier. 
22- According to the passage, Einstein's theories 
state that…………. .
A) there are no definite ways to determine time or 
location 
B) things can be measured by either special or 
general means 
C) how fast something goes, and where it is, are fixed 
values 
D) before 1905, scientists looked at the universe in 
the wrong way 
E) there's simply no point in worrying about either 
time or space 
23- As stated in the passage, Einstein claimed 
that…………. . 
A) matter and energy are really exactly the same 
thing 
B) nobody really knows the true nature of matter 
C) nuclear energy is definitely the best form of 
energy 
D) the true nature of energy doesn‟t really matter 
E) matter and energy can be changed into each other