题目

_____________ people study Latin today than 50 years ago, and still _____________ people study Greek. A. Fewer; fewer      B. Fewer; few        C. A fewer; a fewer   D. Few; fewe 答案：A蚯蚓的身体由许多彼此相似的体节构成，属于______动物．它的体壁密布着______，空气中的氧气先溶解于体表的______里，然后渗进体壁，再进入体壁内的血管中．体内的______也会通过体壁的毛细血管由体表排出．