题目内容：

阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式

Earthquakes can be destructive. Unfortunately, we don t have a 1. (rely) way to predict. But technologies can still help us under such a desperate situation. China is building the world’s largest earthquake alert system and it’s  2.  (possible) the most advanced. Engineers  3. (set) up over 15,000 sensors (传感器) nationwide and wiring them into a web, 4. an earthquake happens, the sensors can send electrical pulses to the control center and then ordinary people’s smartphones.

The signal travels at almost light speed and faster than the earthquake shaking, 5. (give) local people a little time to prepare, and the system can usually send messages to people thin less than two seconds. It’s life-saving. The system, 6. can be the most advanced in many ways, will be the largest earthquake observation network in the world, not only detecting the 7. (move of the continents but also calculating the possible impact  8. an earthquake. It will automatically warn local people, making  9. (it) much faster than human observation. The system, overseen by China’s Ministry of Emergency Management, is set  10. (complete) in 2022.