“走自己的路，让别人去说吧”，这句话告诉我们不需要理睬别人的评价。（   ）

在科学实验中，我们用显微镜观察微小物体，用天文望远镜观测遥远的星体。你认为我们在这些科学研究中借助各种仪器是为了(    )

阅读下段文字，按要求答题。

    青春是一首歌，高（kàng）﹣﹣而富有激情。青春是美好而短暂的，稍纵既逝，我们应该在有限的时间里珍惜青喜，珍爱生命，让它们更富有活力，当生命将要结束时，我们可以无怨无悔地说，我们拥有过无与仑比的青春和最璀璨的人生。

如图为叶片结构示意图，下列对相关结构和功能叙述不正确的是（　　）

阅读下面短文，将文中划线句子译成中文。
　　Some kids in boarding school often like to talk with their roommates. ____ They won’t stop talking until someone comes to stop them. This is the reason why many of them are sleepy in class the next day. Lack of (缺乏) sleep is bad for their health. Growth hormones (生长激素) are very important if one is to grow taller. ____ The body makes the most hormones between 10 p.m. and 2 a.m. While you are asleep. ____ This means that if you don’t get to sleep at the time, you won’t grow taller.