Page 31 - Binder Pendampingan UTBK SAINTEK

B. Its main purpose is to improve the quality of people
C. It deliberately produces monster
D. Its human effect on people’s life is clear
E. It enables us to have more control over future

4. A suitable title for the text is….
A. The advantages of genetic engineering to modem life
B. Negative and positive genetic engineering
C. genetic engineering and genetic welfare
D. the study of advance genetic
E. genetic engineering as a means to harm enemies

According to the controversial sunspot theory, great storms or eruptions
on the surface of the sun hurl streams of solar particles into space and
eventually into the atmosphere of our planet, causing shifts in the weather on
the Earth and interference with radio and television communications.
A typical sunspot consist of a dark central umbra, a word derived from the
Latin word for shadow, which is surrounded by a lighter penumbra of light
and dark thread extending out from the center like the spokes of a wheel.
Actually, the sunspots are cooler than the rest of the photosphere, which may
account for their apparently darker color. Typically, the temperature in a
sunspot umbra is about 4000K, where as the temperature in a penumbra
registers 5500K, and the granules outside the spot are 6000K.
Sunspots range in size from tiny granules to complex structures with area
stretching for billions of square miles. About 5 percent of all sunspots are
large enough so that they can be seen from Earth without instruments;
consequently, observations of sunspots have been recorded for thousands
of years.
Sunspots have been observed in arrangement of one to more than one
hundred spots, but the tend to occur in pairs. There is also a marked
tendency for the two spots of a pair to have opposite magnetic polarities.
Furthermore, the strength of the magnetic field associated with any given
sunspots is closely related to the spot’s size.
Although there is no theory that completely explains the nature and
function of sunspots, several models show scientists’ attempts to relate the
phenomenon to magnetic field lines along the lines of longitude from the north
and south poles of the sun.

5. What is the author’s main purpose in the passage?
A. To propose a theory to explain sunspots
B. To describe the nature of sunspots
C. To compare the umbra and the penumbra in sunspots
D. To argue for the existence of magnetic fields in sunspots
E. To describe the umbra and the penumbra in sunspots

6. The word controversial in paragraph 1 is closest in meaning to …
A. Widely accepted
B. Open to debate

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