Weather ______ has never been a perfect science.
A: pension
B: prediction
C: preservation
D: production
A: pension
B: prediction
C: preservation
D: production
B
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.
内容
- 0
______ in debt to anyone, Tony is very careful about the loans. A: Never has been B: Having never been C: Never being D: Never having been
- 1
Never before ______ as united as it is today. A: our country has been B: has our country been C: has been our country D: have our country been
- 2
______ during the war, the airport has never been used again. A: Has damaged B: Having damaged C: Has been damaged D: Having been damaged
- 3
The writer's main purpose in writing this passage is to say that ______. A: science has greatly improved man's life B: science is far from perfect in exploration of the world C: science has reached its climax in many fields D: science has done too little to human beings
- 4
She has never been to Shanghai, _______?