摘要： Animals should not be locked in cages; they should be in their normal . A. environment B. position C. residence D. dwelling[答案] A. environment.[注释]environment(=surroundings, circumstances)环境.environment作集合名词用时.只用单数形式:We should work hard to improve our environment. Children need a happy home environment.

网址：http://m.1010jiajiao.com/timu_id_553394[举报]