如图，中，，AD平分，BC=10cm，BD=6cm，则点D到AB的距离为（ ）

We are in a world full of competition. Our parents compete (竞争) with others in their offices, our brothers and sisters compete with others in their colleges, and we compete with our classmates in school. Many of us give up in the face of competition and will never be successful. ①can’t, others, why, we, do, better, than One important reason is that we have no self-confidence (自信).

In fact, everyone is born equal. You can do what others do. Although your classmates may be better than you in some ways, you may be better than them in other subjects. So everyone has his or her own advantages. Don’t look at things from a single (单个的) point of view. Try to discover your own advantages, and believe that you can do better than others in those ways.

Competition is not so terrible. Don’t be afraid of it. And don’t be afraid of those classmates who are better than you. ②Remember that self-confidence is the first step to success. Believe in yourselves, and you will be successful one day.

任务一:小题1: Are we living in a world full of competition?

任务二: 小题2: How can you improve your self-confidence according to the passage?

任务三: 小题3: 将①处画线部分单词连成一个完整的特殊疑问句。

任务四: 小题4: 将②处画线部分译成中文。

任务五: 小题5: What’s the main idea of this passage?

下列关于动物激素的叙述，错误的是（）

A.机体内、外环境的变化可影响激素的分泌

B.切除动物垂体后，血液中生长激素的浓度下降

C.通过对转录的调节可影响蛋白质类激素的合成量

D.血液中胰岛素增加可促进胰岛B细胞分泌胰高血糖素

I will bring a flashlight with me _________ I will be able to see in the dark.

A．in case

B．up close

C．so that

D．in advance

车辆在运行中有几种形势的振动？

遵循房地产估价的合法原则，即估价机构或人员应具有合法的评估资格。 ( )