在滑坡体上开挖修做导渗沟应()。
A.尽可能挖至滑裂面
B.开挖至堤顶
C.从上到下分段进行
D.切勿全面同时开挖
E.覆盖防护好已铺设的反滤材料
参考答案:A, C, D, E
—Excuse me,how many students are there in your art club?
—There are ________. [ ]
A. twelve
B. twelfth
C. the twelfth
眩晕属肝阳上亢者,其最主要表现是
A.急躁易怒,口苦口干
B.头目胀痛,舌红苔黄
C.耳鸣耳聋,噩梦纷纭
D.腰膝酸软,头重脚轻