For some adults, chasing fireflies on summer nights are their childhood memories.Unfortunately, fireflies may become part of the past since they are __29__ disappearing inTaiwan as those in other parts of the world. Taiwan is home to more than fifty of twothousand firefly species around the world. Fireflies __30__ in humid, warm areas, and theycan be found in forests and fields __31__ near lakes, rivers, and streams. They glow atnight to find mates. But the presence of __32__ light prevents fireflies from seeing eachother, so they cannot reproduce. Water pollution and the use of chemicals on plants havealso __33__ the firefly’s decreasing numbers.
【題組】29.
(A) at risk of
(B) bound for
(C) put off
(D) dependent on