第7题:[单选题]Ⅱ型防山洪电杆基础,选用的条件为() A. 200≤坡度(i)<300,山洪冲刷区域日最大降雨量<50mm B. 300≤坡度(i)<500,山洪冲刷区域日最大降雨量<50mm C. 200≤坡度(i)<300,山洪冲刷区域50mm≤日最大降雨量<250mm D. 300≤坡度(i)<500,山洪冲刷区域50mm≤日最大降雨量<250mm 参考答案:B
第34题: [单项选择]Where did Jerry fall off A. In a supermarket. B. In a bookstore. C. In a restaurant. 参考答案:A 答案解析:[听力原文] M: Have we got everything now W: No, I still need to get some eggs, tomatoes and potat