题目

已知角为三角形的一个内角，且满足，则角是              （    ） A．第一象限角      B．第三象限角     C．第二象限角   D．第四象限角 答案： CDiscover Nature Schools programsBecoming Bears (Kindergarten-2 grade)By becoming baby bears, children learn from their “parent” to survive the seasons. Kids will find safety in the spring and learn kinds of food bears eat during the summer, and then create a cave for winter hibernation(冬眠). After learning the skills needed to survive, students will go out of the cave as an independent black bear able to care for themselves. (1.5-2 hours)Whose Clues? (3-5 grade)Kids will discover how plants and animals use their special structures to survive. Through outdoor study of plants and animals, kids will recognize their special structures and learn how they enable species to eat, avoid their enemies and survive. Using what they have learned, kids will choose one species and tell how they survive in their living places. (3-4 hours)Winged Wonders (3-5 grade)Birds add color and sound to our world and play an important ecological (生态的) role. Students will learn the basics of birds, understand the role birds play in food chains and go bird watching using field guides and telescopes. Students will do hands-on activities. Students will use tools to build bird feeders, allowing them to attract birds at home.(3-4 hours)Exploring Your Watershed (6-8 grade)We all depend on clean water. Examining how our actions shape the waterways around us. Go on a hike to see first-hand some of the challenging water quality problems in a city. Students will test the water quality to determine the health of an ecosystem.● Each program is taught for a class with at least 10 students.● All programs include plenty of time outdoors. So please prepare proper clothing, sunscreen and insect killers for children.● To take part in a program , please email dcprograms@mdc.mo.gov.1.What can kids do at Becoming Bears?A. Watch bears’ performances.B. Take care of bearsC. Dress up as baby bears to learn about bears.D. Learn how to survive a bear attack.2.Kids who are interested in plants will choose _______________.A. Winged Wonders B. Exploring your WatershedC. Becoming Bears D. Whose Clues?3.According to the passage, all the four programs _______________.A. have the same teaching hoursB. have outdoor activitiesC. are offered during summer holidaysD. are designed for primary school students