填空题


Directions: This section is to test your ability to comprehend short passages. You will hear a recorded passage. After that you will hear five questions. Both the passage and the questions will be read two times. When you hear a question, you should complete the answer to it with a word or a short phrase (in no more than 3 words). The questions and incomplete answers are printed in your test paper. Now listen to the passage.
How tall can apple trees grow Apple trees may grow as tall as ______ .

【参考答案】

twelve meters