一切正在发声的物体都在 ， 停止发声也停止，声音靠 传播；在一根足够长的钢管一端敲击，在另一端可以听到 次响声
振动；振动；介质；二
心搏骤停最常见的病因为（）
A.冠心病
B.心肌炎
C.肥厚型心肌病
D.高血钾
E.窒息
Why do I want to go to college No one has ever asked me （1） a question. But many times I have asked myself. I have（2）a whole variety of reasons. （3） important reason is that I want to be a better man.Many things make human beings different （4）or better than or even superior to animals.One of the most important things is（5）. If I fail to receive higher education, my education.（6） As I want to be a fully （7）man, I must get a well-rounded education, which good colleges and universities are supposed to （8）. I know one can get educated in many ways, but colleges and universities are（9）the best places to teach me how to educate myself. Only when I am well-educated, will I be a better human being and（10） fit into society.
第（10）空应选择（）
A. can good
B. may better
C. be able to better
D. be able to best
