题目内容：

阅读下面材料，在空白处填入适当的内容（不多于3个单词）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’s2.(possible) the most advanced. Engineers3.(set) up over 15000 sensors（传感器） nationwide and writing them into a web. Once4. earthquake happens, the sensors can send electrical pulses to the control center and then ordinary people’s smart phones.

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 in 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 movement of the7.(continent) but also calculating the possible impact8.an earthquake. It will automatically warn local people, making9.(it) much faster than human observation. The system, overseen by China’s Ministry of Emergency Management, is set 10.(complete) in 2022.