同义句转换

1. It's too wet to walk,so we'll go swimming instead.  

It's too wet. We'll go swimming_______ _______walking.

2. His uncle died three years ago.  

His uncle________ ________ _________for three years.

3. I'm sure I can look after your little brother well.

I'm sure I can_______ _______ _______ ________your little brother.

4. He told us many funny stories so that he could make us pleased.  

He told us many funny stories so that he could________ ________.

5. She didn't eat anything except fruit.  

She ate________ ________fruit.

回答下列有关神经系统的问题：

为了研究乙醇对人体神经行为能力的影响，科研人员选取若干自愿者，等量饮用同一种酒，参照世卫组织神经行为能力测试标准，测试简单反应时（对简单信号作出反应的最短时间）、视觉保留（对视觉信号记忆的准确数）和血液中乙醇浓度。以受试者自身未饮酒时为对照，计算能力指数相对值，结果如图所示。请回答下列问题：

测试期间受试者血液中乙醇浓度的变化说明人体能通过调节维持（）。