The scientist confirmed the snake was a previously unknown species after conducting a genetic analysis of tissue samples.
2017年6月四级真题（第二套）听力 Section A
They come to the university to provide us with blood samples, to be interviewed, and to help us carry out a whole range of research.
2019年6月四级真题（第一套）听力 Section C
Traditionally, a hundred samples would take lab technicians more than two days to examine but for a rat it takes less than 20 minutes.
2017年12月四级真题（第一套）阅读 Section A
Within samples collected from the solid substances lying beneath the ice.
出自-2010年12月听力原文
Cerling's team collected tap water samples from 600 cities and constructed a map of the regional differences.
2015年12月六级真题（第二套）听力 Section C
For one thing, they are reliable and so far as they are based on unbiased samples.
2017年12月六级真题（第二套）听力 Section C
My own research at the Stanford Center on Adolescence uses in-depth interviews with small samples of youngsters rather than large-scale surveys.
2016年6月六级真题（第一套）阅读 Section B
They checked the accuracy of the map by testing 200 hair samples collected from 65 barber shops.
2015年12月六级真题（第二套）听力 Section C
They were able to accurately place the hair samples in broad regions roughly corresponding to the movement of rain systems.
2015年12月六级真题（第二套）听力 Section C
When Park heard about the research, he gave the hair samples to the researchers.
2015年12月六级真题（第二套）听力 Section C
But Dr Uri Simonsohn speculated that an inability to consider the big picture was leading decision-makers to be biased by the daily samples of information they were working with.
2013年考研真题（英语一）完形填空 Section Ⅰ
But in late September 2009, officials reported there was significant flu activity in almost every state and that virtually all the samples tested are the new swine flu, also known as A H1N1, not seasonal flu.
2010年考研真题（英语二）完形填空 Section Ⅰ
Surveys and test samples have also become important for understanding the larger landscapes that contain archaeological sites.
2014年考研真题（英语一）阅读理解 Section Ⅱ
The same people were used in both samples.
2015年考研真题（英语一）完形填空 Section Ⅰ