3 . 根据句子意思, 从方框中选用恰当的单词或短语填空。

steps,       animal signs,        worked,        Unless,     carelessness,        miss, As soon as,        breaking out,       all his life

1. The method you taught me ________, and it helped solve the problem at last.
2. Your ________ is the main cause of the mistakes in this exam.
3. Wars ________ part of the world will bring disasters to people there.
4. Qian Xueshen, a great scientist, devoted ________ to China’s scientific career.
5. In the Chinese lunar calendar, there are 12 ________.
6. Anyone can successfully make a kite by taking the following _________.
7. To an engineer of the high-speed railway, a ________ is as good as a mile.
8. ________ you take part in this year’s Huai’an Marathon, you won’t know what great fun it is!

9 . 写出下列短语的中文意思。
1. get back ________
2. bring back ________
3. break out ________
4. come up with ________
5. look at ________