Reading passages

18- The author states that Aspirin……… .
A) has been available in tablet form since 1899
B)became popular worldwide In 1899
C) was first sold by Bayer in 1915
D)was Initially only available after seeing a doctor
E) was commonly used in Germany prior to 1915

The Sahara desert in north Africa stretches eastwards from the Atlantic to the Red Sea and southwards from the Mediterranean to the grasslands and tropical forests of equatorial Africa. It has an area of about 8 million square kilometres and is the world's largest desert region. The world’s highest temperatures have been recorded in the Western Sahara. The traditional inhabitants have been the nomadic Berbers and Arabs moving from oasis to oasis: but vast areas remain totally uninhabited. There is the evidence of recent severe draughts in parts of Nigeria and neighbouring countries to suggest that the Sahara is expanding southwards. On the other hand, there are plans to irrigate some areas; also, the desert has valuable deposits of oil, iron ore phosphates and uranium.

19- The passage tells us that the Sahara desert …… .
A) contains grasslands and tropical forests
B) is between two oceans to the east and west
C) lies to the south of equatorial Africa
D) covers one eighth of Africa
E) has the Red Sea on its eastern boundary


20- The Berbers and the Arabs of the Sahara …….. .
A) have established major settlements there
B) moved to the area in fairly recent times
C) fight over the right to settle in oasis areas
D) inhabit most areas of the Sahara desert
E) have not settled In the desert but moved around


21- We can assume from the passage that the 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.