填空题

SECTION A In this section you will hear a mini-lecture. You will hear the lecture ONCE ONLY. While listening, take notes on the important points. Your notes will not be marked, but you will need them to complete a gap-filling task after the mini-lecture. When the lecture is over, you will be given two minutes to check your notes, and another ten minutes to complete the gap-filling task on ANSWER SHEET ONE. Use the blank sheet for note-taking. Animals We can put animals into groups by studying their (1) . We also have to (2) the different parts of their bodies. Vertebrates are animals with (3) and bones inside their bodies. Fish, amphibians and reptiles are known as (4) vertebrates. All amphibians have thin skins which are usually wet and (5) . Reptiles breathe through lungs and have dry (6) skins. Most reptiles do not have (7) . The mouth of a bird is in the form of a hard bill or (8) . Most mammals live on land but some such as (9) and dolphins live in water. All mammals breathe through (10) .