The scientist confirmed the snake was a previously unknown species after conducting a genetic analysis of tissue samples.
出自-2017年6月聽力原文
When the rats detect the smell, they stop and rub their legs to indicate a sample is infected.
2017年12月四級真題（第一套）閱讀 Section A
Extracurricular activities reflect the differences in child rearing in the Pew survey, which was of a nationally representative sample of 1,807 parents.
出自-2017年6月閱讀原文
My own research at the Stanford Center on Adolescence uses in-depth interviews with small samples of youngsters rather than large-scale surveys.
出自-2016年6月閱讀原文
During commercials, an overlay will appear at the bottom of the screen, prompting viewers to press a button to request a free sample or order a catalogue.
出自-2016年6月閱讀原文
But this third group was not only unexpected, it was so distinct and so large—nearly one third of our sample—that it became a key finding of the study.
出自-2016年12月閱讀原文
To test the polluting power of fulmars, researchers collected samples of deposit from eleven ponds on Devon Island.
出自-2016年12月聽力原文
In the 1930s,when only one in 10 Americans had a degree from a four-year college, an admissions committee was content to ask for a sample of applicants'chool papers to assess their writing ability
出自-2013年12月閱讀原文
In the old days, applicants only had to submit a sample of their school papers to show their writing ability
出自-2013年12月閱讀原文
Within samples collected from the solid substances lying beneath the ice.
出自-2010年12月聽力原文
Critics also argue that commercial genetic testing is only as good as the reference collections to which a sample is compared.
出自-2009年考研閱讀原文
Surveys and test samples have also become important for understanding the larger landscapes that contain archaeological sites.
出自-2014年考研閱讀原文
How do archaeologists know where to find what they are looking for when there is nothing visible on the surface of the ground? Typically, they survey and sample ( ' , make test excavations on) large areas of terrain to determine where excavation will yield useful information.
出自-2014年考研閱讀原文
Typically, they survey and sample large areas of terrain to determine where excavation will yield useful information.