C. READING IX Read the passage. Fill in the blank with a suitable word. Jupiter, Saturn, Uranus, Neptune. These are the giant gas (1) ……………… Scientists think they are (2) ……………… of small, solid cores. Their interiors are fluid. Lightweight gases such as hydrogen and helium make up most (3) ……………… their mass. With all their satellites and ring systems, they are very interesting to observe. Jupiter is the largest planet. It is the fifth (4) ……………… the sun. The length of its year is about 4330 Earth days. This is how long it (5) ……………… for Jupiter to make one revolution around the (6) ……………… It spins very (7) ………………, however. It takes only about nine Earth hours for Jupiter to make one rotation. Jupiter’s diameter is eleven times larger than Earth’s. In fact, Jupiter is only ten times smaller than the sun. This giant planet makes up about 70 percent of all the planetary matter in our (8) ……………… system. X Read the passage. Guglielmo Marconi is the person who generally gets the credit for inventing the radio. He began experimenting with wireless communication in the attic of his father’s villa in Italy. In 1895, he sent a wireless signal one and one-half miles. Marconi found that England was interested in his discovery. They hoped to use it for communication with ships at sea. So, in 1896, Marconi moved to England and began his Wireless Communication and Signal Company. By 1899, he was able to send a signal across the English Channel, a distance of 31 miles. At the same time, an inventor in the United States, Nikola Tesla, was also experimenting with wireless communication. As early as 1893, he had experimented with the technology and conducted demonstrations and lectures on the subject. Unfortunately, his progress was slowed when a fire destroyed his laboratory. Answer the questions below. 1. Where did he carry out the first experiment with wireless communication? 2. How far could his wireless signal reach in 1895? 3. What did England want to do with his wireless signal? Decide if the statements are true (T) or false (F) 1. Marconi started his company in his home country. 2. Marconi was the only person who had the idea about wireless communication at that time. 3. Nikola Tesla could do a job as a lecturer. 4. Nikola Tesla was unlucky with his invention.