GRE Text Completion: ETS Fundamental-GRE填空ETS基础 - GQ2435104CPWD4E4X

Until the current warming trend exceeds the range of normal climatic fluctuations, there will be, among scientists, considerable ____________ the possibility that increasing levels of atmospheric CO2 can cause long-term warming effects. A. interest in B. uncertainty about C. enthusiasm for D. worry about E. experimentation on