如图所示，一根竖直的弹簧支持着一倒立气缸的活塞，使气缸悬空而静止，气缸和活塞的总

A、B、C、D四位同学看演出，他们同坐一排且相邻，座号从东到西依次是1号、2号、3号、4号．散场后他们遇到小明，小明问：你们分别坐在几号座位．D说：B坐在C的旁边，A坐在B的西边．这时B说：D全说错了，我坐在3号座位．假设B的说法正确，那么4号座位上坐的是______．

用括号内的单词的正确形式填空:

6.  Ms Huang is a ______ (represent) of our company in France.

7.  She does a ______ (various) of fitness activities.

8.  Many children are full of ______ (curious) about foreign culture.

9.  She made an important ______ (announcer) to her parents about her engagement.

10.  I have just received a letter from my old school, ______ (inform) me that my former headmaster will be retiring next week.

如图为在光学显微镜下看到的植物细胞模式图，因为该细胞有______、______和______．

（1）刀切鲜橙时，流出的黄色汁液主要是______，它来自图中结构[______]______．

（2）能够控制物质进出细胞的结构是[______]______．

（3）对细胞具有保护作用的结构是[______]______．

（4）[______]是绿色的，其体内含有______．

小明父亲的血压为21/13kPa，可判断小明父亲是高血压．______．

桥梁施工监测中的几何形态监测的内容有（）跨长、结构线形。

A.标高

B.混凝土收缩徐变

C.温度