In the following passage, some of the words have been left out. Read the passage carefully and select the correct answer for the given blank out of the four alternatives. The scenario _________________ dramatically today. We have the ___________________ of powerful Internet monopolies that are much bigger ________________ the telcos. Not surprisingly, these companies now see the _______________ of monopoly. They would like to combine with telcos to create monopolies for their platforms, ensuring that they control the future of the Internet and freeze their competition ____________. Not surprisingly, these companies now see the _______________ of monopoly.
PAL and SECAM are standards used in other countries. RGB stands for red, green, and blue - the colors of light used to create an image in a color tv set and is often used as a format name for computer monitors.
The yo-yo was first used by hunters as weapons. They were wooden disks on strings. In the 1920s, a man from the U.S. named Donald Duncan made the yo-yo into a toy after he visited the Philippines.
4. Which of the following is concerned with the study of characteristics, origin and development of land forms?