第31题: [单项选择]An enlarged prostate may ______ the bladder and pinch off the urethra, causing pain and difficulty with urination. A. collaborate B. compress C. bother D. boil 参考答案:B 答案解析:[解析] B项“compress压缩”符合题意。其他三项“A项collaborate合作,通敌;C项bother打扰;D项boil煮沸”都不正确。本题空格处是说前列腺增大会挤压膀胱。因此B项为正确答案