An（__）of alien species can cause untold damage if adequate measures to tackle it are not taken. (invade)
举一反三
- Most environment problems exist because adequate measures for preventing them ( ) taken in the past. Most environment problems exist because adequate measures for preventing them ( ) taken in the past.
- According to Sunzi, if a route can be taken, then it should be taken. A: 正确 B: 错误
- 中国大学MOOC: According to Sunzi, if a route can be taken, then it should be taken.
- Road conditions in this area had gone from bad to worse. Accidents had taken place ______ before the strict measures were taken. A: by the way B: in a row C: in the way D: in a line
- War can cause serious damage to the country's ________ . A: economy B: economic C: economical D: economically