【单选题】肌肉兴奋一收缩耦联的关键因素是______。
【简答题】补全对话。 A: Great weekend again! I'm so happy. 1_____ ? B: I'd like to do sports. A: Me, too. What sport are you going to do? B: 2_____. A: But the radio says it will be rainy tomorrow. B: It's just the...
【简答题】根据对话内容,在空白处填写适当的话语(话语可能是一个句子,也可能是一个短语或一个词),使对话完整。 A: Great weekend again! I'm so happy. 1 ? B: I'd like to do sports. A: 2 . What sport are you going to do? B: I'm going swimming. A: But the radio say...
【简答题】补全对话。 A: 1 _____. B: Why do you like to see pandas? A: 2 _____. B: 3 _____? A: I like to see elephants, too. Because they can dance. B: Really? 4 _____. By the way, do you want to be an assistant in t...
【简答题】补全对话(选择正确答案的序号填入横线上) A: 1 . B: Why do you like to see pandas? A: 2 . B: 3 ? A: I like to see elephants, too. Because they can dance. B: Really? 4 . By the way, do you want to be an assistant in the zo...
【单选题】目前认为骨骼肌细胞实现兴奋一收缩耦联的关键因素是
【单选题】人体循环系统由心血管系统和( )系统组成。