问答题我在街上走时,看到了一古老的建筑物。
单项选择题Why don’t developing countries have strict pollution controls
问答题一位著名的运动员将传送熊熊燃烧的火炬。
单项选择题In the author’s opinion, it was surprising that ______.
单项选择题By saying Humans are social animals , the author means ().
A. they live all over the world B. they are different from other animals C. they live in one place, district or country, considered as a whole D. they are divided into many groups