Read the following passage and mark the
letter A, B, C, or D on your answer sheet to indicate the correct word or
phrase for each of the blanks.
in central Africa, Lake Victoria is a very unusual lake. __( 44 )__ of the
largest lakes in the world; it is also one of the youngest. Estimated to be
about 15,000 years old, it is a relative baby compared with Earth’s other very
large lakes, __( 45 )__ more than two million years old. Yet judging by the
variety of life in it, Lake Victoria __( 46 )__ a much older body of water.
Usually, lakes need a much longer time __( 47 )__ by a diverse array of
life-forms. It is common for new lakes to contain only a small number of
species. Lake Victoria, however, is packed with colorful fish, most notably,
cichlids. There are __( 48 )__ 500 different species of just this one type of