立井井颈部分的施工,根据表土及岩层结构情况可分别选用()施工。
A.普通法
B.特殊法
C.冻结法
参考答案:A, B, C
Do you know London Zoo? London Zoo is the world’s oldest scientific (科学的) zoo. It has a history of about 180 years. London Zoo has about 755 kinds of animals. There are lions, camels, giraffes, snakes, tigers, monkeys and many more. There is also an aquarium(水族馆)in the zoo. It has many kinds of fishes. London Zoo doesn’t open every day. It doesn’t open on December (十二月)25th.So do not go to visit it on that day. The zoo opens at 10 am and closes at 4 pm in winter and 5: 30 pm in spring, summer and autumn.
根据短文内容回答问题
小题1:How old is London Zoo?_____________________________________________________
小题2:How many kinds of animals does London Zoo have? ____________________________
小题3:Is there an aquarium in the zoo? _______________________________________________
小题4:Does London Zoo open every day?_____________________________________________
小题5:What time does the zoo open in winter?______ ________________________
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