题型:阅读理解 题类:常考题 难易度:普通
江苏省南通市启东市2020-2021学年高二下学期英语期中学业质量监测试卷
The American Bumblebee—a species once more commonly seen around Southern Ontario—is endangered, according to a new study led by York University.
The finding, published in Journal of Insect Conservation, found the native North American species, one of bumblebee species, is facing upcoming local extinction(灭绝) from Canada. Many bumblebee species are rapidly declining across North America, but are important pollinators(传粉昆虫) needed to grow Canada's crops including apples, tomatoes, and blueberries, as well as countless types of trees, shrubs, and wildflowers.
"This species is at risk of extinction and it's currently not protected in any way despite the sharp decline," said Assistant Professor Sheila Colla, an expert in bees and endangered species in the Faculty of Environmental Studies.
"Now that we have assessed the degree of the decline and located where the remaining populations are, we can look more closely at habitat(栖息地) requirements to design an effective conservation management plan so that this species does not disappear from Canada forever," said Colla, who co-authored and helped design the study.
Colla has been studying bumblebees in Southern Ontario since the mid-2000s. This study relies on the annual data that she and her fellow researchers have collected.
The study's research team used data from three sources. They analyzed Southern Ontario data from the citizen science program, Bumble Bee Watch, a collaboration(合作) of volunteers who submit bumblebee photos through a website or phone app for experts to identify. The researchers used the Bumble Bees of North America database to obtain records of bumblebee species in Ontario and Quebec dating back to the late 1800s. They also used their own field survey work which allowed them to evaluate the status of the species within its Canadian range, using the globally recognized International Union for the Conservation of Nature(IUCN)Red List assessment criteria.
Courses & Curriculum of the College of Arts & Sciences in Cornell
The diversity of the courses you can take in the College of Arts & Sciences is extraordinary: Academic Distribution Requirements The College's academic distribution requirements will include: effective writing foreign language beyond the introductory level imaginative and critical thinking To choose your courses for a semester, use the Class Roster. It shows the schedule of all classes offered in a particular term, along with class enrollment information and course details. The Class Roster is updated frequently. To plan your classes over your four years at Cornell, use the Courses of Study. It represents Cornell's full catalog of courses and is published annually. It provides information on Cornell degree programs, requirements, policies and procedures. If you need help, call 607-255-5004 for an appointment with an advising dean. Or contact a career counselor in the Arts & Sciences Career Development Center at 607-255-4166 to talk about your interests and how they can translate into a major and a future career. A New Curriculum On October 30, 2018, the College of Arts & Sciences faculty(教员) approved a new undergraduate curriculum to be carried out over the next two to three years. The new curriculum focuses on the theme of exploration and reaffirms the college's commitment to a liberal arts and sciences education. Students who have questions about the new curriculum can view the approved proposal on the Course Designer app of Cornell. Innovative Learning If you're one of the 3,000 students across the university taking biology or physics at the College, you may be part of an innovative(创新的) classroom project that uses active learning, a new model that is proving to be the quickest path to expert-level mastery. Your education at Cornell will extend far beyond the classroom. You can join a faculty member's research team on campus, conduct field study research in different states or spend a semester with Cornell in Washington D.C. You could study abroad in one of more than 85 countries or develop your own research project through independent study. Give yourself the freedom to explore. |
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