Weather ______ has never been a perfect science.
A: pension
B: prediction
C: preservation
D: production
A: pension
B: prediction
C: preservation
D: production
举一反三
- Never before so highly successful in his attempts to modify the weather on a very small scale. A: man has been,man is,has man been,will be man
- 5. Never before _____ so highly successful in his attempts to forecast the weather accurately on a small scale. A: man has been B: has man been C: man is D: is man
- Never before ____ so highly<br/>successful in his attempts to change slightly the weather on a very<br/>small scale. A: man has been B: has man been C: will be man D: man was
- He said he________to Beijing. A: has never been B: had never been C: has never gone D: had never gone
- Never ( ) the weather been so bad in November.