搜索
| ||||
YOUR IMPACT BEGINS TODAY
With your support, we’re driving new knowledge, working to reduce our human footprint on the planet, and inspiring a new generation of changemakers to value the natural world and help create a brighter future. | 100% of all donations go directly to our Explorers and programs. We’ve built a sustainable, innovative business model that allows us to invest every dollar you donate directly to our Explorers and programs. When you support the National Geographic Society, not only are you supporting your passion for the planet, but you also help protect its wonder. You ensure our mission lives on so we can continue exploring the planet, saving wildlife, protecting our ocean, empowering the world’s most innovative scientists to help solve the planet’s mysteries and challenges, and preserving our ancient heritage for future generations. Your generous contribution will immediately go to work supporting the things you care passionately about — not operating costs. | |||
| SUPPORT OUR WORK Tax-free gifts National Geographic Society is a tax-free organization, and we rely on the generosity of donors like you to support our Explorers’ work in science, exploration, education, and storytelling. | ||||
| Single and monthly donations Make a gift today to help explore and protect our planet. By giving monthly, your reliable support allows us to respond to the most pressing programmatic needs. | Employer Matching Gifts Many companies have a matching gift program for employees. You give an amount and your company donates the same. Double your impact by exploring your employer’s matching gift programs. | Honor/Memorial Giving Honor a friend or loved one’s passion for science, exploration, education, and storytelling by making an unusual gift in their name. | ||
| A．To guide people to invest in a sustainable business. |
| B．To attract donations to National Geographic Society. |
| C．To appeal to people to preserve ancient heritage sites. |
| D．To publicize the mission of National Geographic Society. |
| A．Make it a gift in the name of your friend. |
| B．Support the most pressing employer. |
| C．Reduce the tax attached to the donation. |
| D．Try your company’s matching gift programs. |
| A．It needs no operating costs. | B．Its mission hasn’t been recognized. |
| C．It is dedicated to protecting nature. | D．Its employees needn’t pay income tax. |
同类型试题
y = sin x， x∈R， y∈[–1，1]，周期为2π，函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x， x∈[–1，1]， y∈[–π/2，π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
y = sin x， x∈R， y∈[–1，1]，周期为2π，函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x， x∈[–1，1]， y∈[–π/2，π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
