题目

In the dark forests ____, some large enough to hold several English towns. A.stand many lakes    B. lie many lakes     C. many lakes lie       D. many lakes stand 答案：B下列命题中，正确的是A.对角线互相垂直的四边形是正方形B.任意两个等腰梯形一定相似C.圆内接四边形的对角互补D.平行四边形既是中心对称图形，又是轴对称图形