a. 科学的, 系统的, 符合科学规律的
M) This type of study can’t say exactly what kind of exercise is best, or how much is needed—only a study that has a placebo (安慰剂) group and tracks people going forward can do that, said Keith Fargo, director of scientific programs and outreach at the non-profit Alzheimer’s Association.
四级 · CET-4 2026年6月 第2套
At the moment, the scientific bases for these applications are non-existent or incredibly weak.
四级 · CET-4 2025年12月 第3套
Today, most scientific research is funded by government grants, companies doing research and development and nonprofit foundations.
四级 · CET-4 2024年6月 第2套
In a perfect world, money wouldn’t matter — all scientific studies would be completely objective.
四级 · CET-4 2024年6月 第2套
These groups provide invaluable funding for scientific research.
四级 · CET-4 2024年6月 第2套