Directions:In this section you will hear a recorded short passage.The
passage is printed in thetast paper with some words or phrases missing,The
passage will be read three times.Duringthe second reading,you are required to
put the missing words or phrases on the Answer Sheet inorder of the numbered
blanks according to what you hear.The third reading is for you to check your
writing.Now the passage will begin．
When you were six years old,you had 20 teeth.These are called
milk-teeth.After you are six,your milk-teeth begin to (11)
.They’re making way for a new (12) .As new teeth
comein,they cut off the (13) supply to the milk-teeth.After a
while,the milk-teeth fall out.By the time you are 25,you should have a whole new
set of teeth.And you’ll have 12 (14) teeth.In all,you’ll
have (15) teeth in each jaw.