1 . Directions; Fill in each blank with a proper word chosen from the box. Each word can only be used once. Note that there is one word more than you need.

A. webs   B. occasionally   C. pick     D. continuously   E. feeding   F. belong G. bite     H. generally     I. dropping   J. exceptions     K. trap

The world is full of many tiny creatures besides insects. There are snails and slugs that creep along the ground, worms that dig holes underground, and many more. Some, like insects,    1    to a huge group of little creatures called arthropods, which also includes spiders and other arachinids, centipedes, and woodlice.

Spiders are found in almost everywhere in the world. They are most plentiful where there is plenty of vegetation, but you can encounter spiders in the darkest cellars and down the deepest mines, as well as high on mountains. Spiders are hunters,    2    mainly on insects and other arthropods though a few large “bird-eating” species, or tarantulas,    3    eat lizards and small rodents. Unlike other hunting animals, spiders    4    have poor eyesight. They usually have eight simple eyes, not the compound eyes of insects, and hunt by “listening” to vibrations in the ground, which they    5    up with their legs. Jumping spiders, with wolf spiders and ogre-faced spiders being    6    , have very keen eyesight.

Different species of spider have different methods of catching prey. Many weave silken nets called    7    . Some are simple tube-shaped webs inside holes, others are elaborate orb webs. The web is usually sticky, so any insects flying into it are stuck fast.

Spiders such as tarantulas and sun spiders destroy their victims with their powerful fangs, but most species use their poisonous    8    to kill or disable their prey. Some spiders, such as the black widow and funnel-web spiders, have a bite so poisonous that it can be fatal to humans.

Not all species of spider make webs. Some catch their preys by    9    a silk net on them. Others, such as the Australian trapdoor spider,    10    their prey from a hole with a carefully-fitting and well-masked flap. Hunting spiders follow their preys secretly and leap on them from a distance.