Experts suggest some ways to treat excessive earwax yourself. (45)_________________________. Another way to remove wax is known as irrigation. With the head upright, take hold of the outer part of the ear. Gently pull upward to straighten the ear canal. (46)__________________

　　____________________________. Then turn the head to the side to let the water out.

　　Part IV Reading Comprehension (Reading in Depth) (25 minutes)

　　■ Section A

　　Directions: In this section, there is a passage with ten blanks. You are required to select one word for each blank from a list of choices given in a word bank following the passage. Read the passage through carefully before making your choices. Each choice in the bank is identified by a letter. You may not use any of the words in the bank more than once.

　　Questions 47 to 56 are based on the following passage.

　　Rock and roll is a genre of popular music that evolved in the United States in the late 1940s and early 1950s. Its 47 lie mainly in blues, rhythm and blues, country, folk, gospel, and jazz. The style subsequently spread to the rest of the world and developed further, leading ultimately to 48 rock music.

　　The term “rock and roll” now covers at least two different meanings, both in common usage. The American Heritage Dictionary and the Merriam-Webster Dictionary both 49 rock and roll as synonymous with rock music.

　　50 , Allwords.com defines the term as referring specifically to the music of the 1950s.

　　Classic rock and roll is 51 played with one or two electric guitars, a string bass or an electric bass guitar, and a drum kit. In the 52 rock and roll styles of the late 1940s, either the piano or saxophone was often the lead instrument, but these were generally 53 or supplemented by the guitar in the middle to late 1950s.

　　The massive popularity and eventual worldwide view of rock and roll gave it a 54 social impact. Far beyond simply a musical style, rock and roll, as seen in movies and in the new medium of television, 55 lifestyles, fashion, attitudes, and language. It went on to spawn various sub-genres, often without the initially 56 backbeat, that are now more commonly called simply “rock music” or “rock”.

　　A) define I) followed

　　B) characteristic J) modern

　　C) unique K) explanation

　　D) roots L) Conversely

　　E) usually M) replaced

　　F) Basically N) prepare

　　G) earliest O) seldom

　　H) influenced