根据句意，写出括号内所给单词的适当形式。
____ Do you think it's good for you to keep worries to  _______ (your), boys and girls?
____ In China, it's becoming much _______ (hard) for people to pass the driving tests.
____ The government has realized the importance of the _______ (safe) of the children who take a school bus.
____ More and more teachers feel worried about some _______ (teenage) strange behaviour.

因宣称“人人生而平等，造物主赋予他们某些不可转让的权利，其中包括生命权、自由权和追求幸福的权利”而被马克思称为“第一个人权宣言”的是（    ）

【查阅资料】

①NaOH与CuSO₄反应会生产Cu（OH）₂，也会生成Cu₄（OH）₄SO₄（碱式硫酸铜）．

②Cu（OH）₂在80℃会分解生成CuO．

③Cu₄（OH）₄SO₄不溶于水，能与酸反应，分解温度需300℃．

阅读材料，回答问题。

材料:下列三幅图片正是***奋斗历程的缩影。