Variant 1 You could have come first and won the race if you … faster

19. The 16th century was an age of great ... exploration.

A) mental and physical B) cosmic and mundane C) secular and celestial D) land and sea

20. Why Magellan arranged to explore natural physical features of the area of South America?

A) He wanted to find the place the Strait of All Saints.

B) He wished to investigate waterway in this area.

C) He was ordered to look for the passage 50 degrees S latitude.

D) He had a desire to discover the Strait of Magellan.

21. Where is located the place which was searched for by Magellan?

A) In South America B) In Basque C) In the Philippines D) In the westward of Spain

22. What was the inference of the expedition after an arduous travel?

A) They determined the physical location of South America. B) They discovered the Strait of Magellan.

C) They found a southward peninsula in South America. D) They confirmed that there is no brink of the Earth.
Bacteria are extremely small living things. While we measure our own sizes in inches or centimetres, bacteria

size is measured in microns. One micron is at thousandth of a millimetre a pinhead is about a millimetre across. Rod shaped bacteria are usually from two to four microns ling, while rounded ones are generally one micron in diameter. Thus if you enlarged a founded bacteria a thousand times, it would be just about the size of pinhead. An adult human magnified by the same amount would be over a mile tall. Even with an ordinary microscope, you must look closely to see bacteria. Using a magnification of 100 times, one finds that bacteria are barely visible as tiny rods or dots. One cannot make out anything of their structure. Using special stains, one can see that some bacteria have attached to them wavy-looking "hairs" called flagella. Others have only the flagellum. The flagella rotate, pushing the bacteria through the water. Many bacteria pack flagella and cannot move about by their own power while others can glide along over surfaces.