为了验证动物体内甲状腺激素分泌的负反馈调节机制，某同学设计了如下实验步骤：

第一步：取9只兔子，分别给每只兔子注射含放射性的碘溶液．

第二步：　                                                                                  ．

第三步：将上述实验兔子随机平均分为A、B、C三组．

第四步：向A组注射一定量的无放射性的甲状腺激素溶液，向B组注射等量的无放射性的促甲状腺激素溶液，向C组注射等量的生理盐水．

第五步：2天后，分别测定三组兔子甲状腺中碘的放射量，记录并计算平均值．

回答下列问题：

如图所示，要使Q线圈产生图示方向的电流，可采用的方法有（   ）

完形填空

Professor Jonathan Wong of the Department of Biology takes part, in low-carbon (低碳) living projects. Here, he tells us how we can lead a low-carbon life by paying 1to how we dress, eat and 2 Here are his words.     

 Wear “out”

       I prefer simple clothing and buy new 3only when I really need them. I don't mind using the same clothes for more than 10 years. My family members never4 their clothes in the trash. We donate (捐赠)them, instead. If the clothes are really worn out, we cut them into 5and use them as cleaning rags(抹布) for the floor.

 Simple eating habits   

     My family eat more vegetables and 6 meat. I often tell my children not to eat junk food. Our7 style is mainly steaming (蒸) or boiling because this is a healthier way. It is also a way to8energy.

 Live on less energy

       I also pay attention to the use of electricity. My family members are already in the habit of 9lights when leaving a room. When we take a bath, we will set the water 10 to around 40℃. All these things are good for saving energy.

  We hope that everyone can do something to protect the environment and save the energy.