题目

一Would you like to go to the cinema with me?—  ___________            A．Yes，I'd like to                          B．No．I wouldn't          C．No，I don’t want to go with you D．Yes，1 would 答案：A  由于长江上游的植被受到破坏，造成水土严重流失，河水中的泥沙含量增加，使得河水的密度    ，河水对堤坝的压强    ．（以上两空选填“变大”、“变小”或“不变”）