语法填空

    I will never forget that at the age of 9 I was asked to deliver a speech entitled A Challenge in My Life before the whole class! You can imagine how ____(terrible) shy I was the moment I thought of that…with so many eyes ____ (fix) upon me. I could do nothing but ____ (prepare) for it, though. First, I was to draft the speech, which was just a piece of cake for me, a good writer. But the hardest part ____ (lie) in my oral presentation from my memory, for to read from the paper was not allowed. The real moment began ____ I stood on the platform with my legs trembling and my mind blank. But my ____ (listen) were waiting patiently without any signs of rushing me. Gradually I found myself back, giving out my speech tongue-tiredly. After ____ seemed to be a hundred years, I found my audience applauding…I made it! From then on, my fear of talking before ____big audience disappeared. Actually with my confidence building up, I now turn out to be a great speaker. Looking back, I know the greatest difficult on our way ____ success is our fear. Overcome it, ____ you will be able to achieve your goals.

某城市一天的气温是﹣5℃～﹣7℃，最高气温和最低气温想差2℃．

（ $1$ ）将天平放在水平桌面上并调节天平平衡．

（ $2$ ）用天平测出____的质量，记为 $m_0$ ．

（ $3$ ）在瓶中装满水，拧紧瓶盖，____，记为 $m_1$ ．

（ $4$ ）____，记为 $m_2$ ．

（ $5$ ）则牛奶的密度 $\rho =$ ____（写出表达式，用测量量的字母表示，水的密度用 ${\rho }_{水}$ 表示）．

利用图1中所示的装置，做“测定重力加速度”的实验中，得到了几条较为理想的纸带．已知每条纸带上每5个点取一个计数点，即两计数点之间的时间间隔为0.1s，依打点先后编为0，1，2，3，4，…．由于不小心，纸带都被撕断了，如图2所示，根据给出的A、B、C、D四段纸带回答：

在下列运算中，计算正确的是（     ）