某同学进行一项实验，目的是观察ATP可使离体的、刚刚丧失收缩功能的新鲜骨骼肌产生收缩这一现象，说明ATP是肌肉收缩所需能量的直接来源。
(1)实验中，必须待离体肌肉自身的________消耗之后，才能进行实验。
(2)在程序上，采取自身前后对照的方法：先滴加______(填“葡萄糖”或“ATP”)溶液，观察________与否以后，再滴加__________(填“葡萄糖”或“ATP”)溶液。
(3)试想，如果将上述顺序颠倒一下，实验结果是否可靠？解释原因。______________________。
(1)ATP
(2)葡萄糖 肌肉收缩 ATP
(3)不可靠。如果外源ATP尚未耗尽，会出现滴，加葡萄糖溶液肌肉也会收缩的现象，造成葡萄糖也能被肌肉直接利用的假象
My now 7-year-old grandson, who lives 100 miles away, has kept my phone number in his mind since he was 4. Since then, he has been 1 me every night before he goes to bed to tell me about his day or just to say “Good night, Grandma.” He also often calls me at other times during the day just to 2 a happy or sad moment. Many times he’s playing a basketball with one hand, or laughing with a friend about something that I 3 quite understand, or crying about something he may or may not want to talk about while I’m on the other end of the phone. I just listen and empathize (同情) or laugh with him—just share his current (当前的) 4 . I always let him control the 5 , and the time he’s on the phone with me. Many times I just listen to him play, or play games we’ve made up together that we can play over the 6 . The only time I take control of the 7 is when he’s ready to say goodbye at night. Often there are four special 8 I say to him every night. One night I thought maybe he was tired to hear those, so I didn’t say them. He 9 called me back and told me that I forgot to say those sentences! I haven’t missed saying them since then! My friends all know that he is the most important for me. 10 I’m in church(教堂), or some place where I really can’t take his call, I always politely excuse myself and talk to him, even if it’s just for a minute to tell him I’ll call him back in a few minutes. He knows that he takes first place in my heart.
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