What is the author's attitude toward tourism
A. apprehensive.
B. negative.
C. critical.
D. appreciativ
对于渗透性好的级配碎石基层，其粘层沥青可选用( )。
A. 快裂型乳化沥青
B. 慢裂型乳化沥青
C. 快裂型石油沥青
D. 慢裂型石油沥青
以下土石材料中，不得直接用于路堤填筑的是( )。
A. 巨粒土
B. 碎石土
C. 细砂质粉土
D. 盐化岩石
What problem at the office are Cathy and Stan discussing
A. There aren't enough cabinets.
B. There is too much noise.
C. Office supplies are taking up space.
D. Some teaching assistants don't have desks.
微信支付 
支付宝支付