一、I. Listen and choose. （听录音，选出你所听到的单词。）
( ) 1. A. two B. twelve C. twenty
( ) 2. A. thirteen B. fifteen C. fourteen
( ) 3. A. six B. sixteen C. eighteen
( ) 4. A. seventeen B. seven C. nineteen
( ) 5. A. ten B. eleven C. eight

Ⅰ.1. B 2. C 3. B 4. C 5. B

Ⅱ. Listen and judge. （听录音，判断下列图片与你所听内容是“T”否“F”相符。）
( ) 1. ( ) 2. ( ) 3.
( ) 4. ( ) 5.

Ⅱ.1. F 2. F 3. T 4. F 5. T

Ⅲ. Listen and choose. （听录音，选择你所听到的句子。）
( ) 1. A. How many books do we have?
B. How many boxes do we need?
( ) 2. A. We have fifteen books.
B. We need sixteen boxes.
( ) 3. A. How about three for seventeen yuan?
B. You can have three for seventeen yuan.
( ) 4. A. How much is this bag? B. How much is this ball?
( ) 5. A. Numbers go up. B. Numbers go down.

Ⅲ.1. B 2. B 3. B 4. A 5. A

四、V. Listen and choose. （听录音，选择正确的答语。）
( ) 1. A. It's twenty yuan. B. I have twenty.
( ) 2. A.I have sixteen pencils. B.I need sixteen pencils.
( ) 3. A. Eighteen books. B. Nineteen bags.
( ) 4. A.I have ten. B. It's ten yuan.
( ) 5. A. OK. B. Thank you.

Ⅳ.1. A 2. B 3. A 4. B 5. A