阅读理解。 How much ancient forest (原始森林) do you have in your home? Are you sleeping on illegal trees-trees from the Congo? Is your kitchen table made from wood, which has started social conflict in a distant African country? Are you literally flushing an ancient forest down the toilet? Check out our interactive Forest House to see exactly where your household goods come from and the forest-friendly alternatives. The Earth's ancient forests are unique, centuries old regions that support countless plant and animal species as well as native communities. But they are rapidly vanishing (消失) as the demand for wood and paper grows. In fact, only 20 percent of the world's ancient forests remain-a very scary statistic. Our comfy houses are contributing to the problem-in Europe, 50 percent of the tropical wood used in our furniture, doors and window frames is logged illegally, often from irresponsibly managed ancient forests. This wood often fuels corruption and social conflict and destroys the homes of endangered or undiscovered species. Our interactive Forest House is a room-by-room (and garden) guide to wood in household products, featuring everything from flowerboxes to guitars. You can also learn exactly why wood is 'good' or 'bad' and print out our one-pager to stick on the fridge and check before you make that trip to IKEA. The Forest House also lets you search by product, so if you're on the lookout for a new hat stand or toilet seat, you'll know you should give teak a miss. In general, the safest wood is always Forest Stewardship Council (FSC) certified. This means that the wood is from a sustainable (可持续的) managed forest and that the rights of indigenous peoples are respected during the logging process. Some homeware stores such as IKEA and Home Depot (in the US) have made commitments to only source FSC certified wood for their products. 1. Write out some wood products in your home. (1) (2) (3) (4) 2. Only _______ of the world's ancient forests remain. [     ] A. 10% B. 20% C. 50% D. 80% 3. In general, the safest wood is _______. [     ] A. Congo B. IKEA C. FSC D. Home Depot 4. From the passage, we know that _______. [     ] A. In Europe, 20% of the tropical wood used in our furniture is logged illegally. B. Ancient forests are rapidly vanishing because of the demand of human being. C. We have no ancient forests in our homes. D. We don't have to use the wood from a sustainable managed forest.