根据汉语意思写单词。

请将下列动物和所属类群用线连接起来。
A丹顶鹤 ____                          a软体动物
B鲫鱼____                              b鸟类
C对虾____                              c鱼类
D蝙蝠____                              d节肢动物
E扬子鳄  ____                         e哺乳类
F乌贼____                               f爬行类

小刚为探究“导体电阻与温度的关系”，选用不同型号的铅笔芯进行了如下实验：

步骤一：将H型铅笔芯接入电路，闭合开关，测量并记录通过它的电流；

步骤二：用酒精灯给铅笔芯加热，每隔20秒测量并记录通过它的电流；

步骤三：分别将HB型、28型铅笔芯接入电路，重复以上实验过程。   下表是记录的实验数据：

读“某区域经纬网图”，回答有关问题．

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    Fred is a bus driver. He always drives the number 14 bus. Fred's bus goes 1the shopping mall on High Street to the park on Queen Street, then 2to the shopping mall. Fred3work at six o' clock every morning.4 bus leaves the shopping mall at ten past six. Fred is sometimes5 to work. When he is early, he sits in his bus and6the newspaper until it's time to go. Fred always stops for 7on the bus because he has to finish work at three o'clock in the afternoon. He doesn't go home by bus. He 8 ! He thinks it's really good for his health. Fred loved his 9 because he can meet different people every day. And he is very10. So the people who travel on Fred's bus like Fred very much.