材料：“技不在高，而在德；术不在巧，而在仁。医者看的是病，救的是心，开的是药，给的是情”。70岁的胡佩兰退休后，仍然坚持坐诊。她的眼中没有病人的身份及其贫富，只有感情。她看病开药方很少超过百元，一辈子只开便宜、管用的药。她在去世的前一天还在为病人看病，留给世人的最后一句话是“病人看完了，都回家吧”。她在平凡的岗位上忠诚履行了一个医务工作者的神圣职责，谱写了大爱无疆、无私奉献的感人篇章。

依次填入下列各句横线处的成语，最恰当的一组是：

①我们要把握住时代的脉搏，更要            ，从宏观角度规划未来，携手共创一个稳健团结、自强不息的社会。

②朱泚军        ，占据有利地势，发射强驽、投掷巨石，漠谷顷刻间变成了死亡之谷，唐军死伤惨重、一举崩溃。

③他的决策        ，具有战略意义，面对纷繁复杂的国际形势，他向世界人民展现出了非凡的英明和伟大的气魄。

如图所示，一只半球形碗倒扣在水平桌面上处于静止状态，球的半径为R，质量为m的蚂蚁只有在离桌面的高度大于或等于 $\frac{4R}{5}$ 时，才能停在碗上，若最大静摩擦力等于滑动摩擦力，那么蚂蚁和碗面间的动摩擦因数为（　　）

下列属于同种物质的是（）

语法填空

    Yesterday was my 18th birthday. As Father and Mother thought it____ (be) a big occasion for me, they suggested I ____ (held) a birthday party at home to celebrate it. For several days they had been busy ____ (prepare) for this. By 4 o'clock I was pleased to see all my friends had come ____ a lot of beautiful presents.

    We spent a wonderful night together, ____ (happy) talking and eating. One of ____ most exciting moment was when Mother put a big birthday cake on the table and all my friends began to sing Happy Birthday. Seeing the 18 candles burning, I couldn't keep back my ____ (tear). Without Mother and Father's love, I would not lead such a happy life now. Mother asked me to make a wish before I blew out all the candles. After that, everyone enjoyed the sweet birthday cake and shared my happiness.

    I am eighteen years old now, ____ means I've become an adult and have ____ (many) responsibilities. I'll do my best to return my parents' love and live up to ____ (they) expectations.