完形填空

    Hello, everyone!1 to Class 3. I'm your new English teacher, Mr. Yang. Now let me tell you our class 2. First, you can't be late  3 class. You must 4 on time. Second, you must bring your English books and notebooks to every  5. Third, you must  6 English during the pair work activities. If it's 7 for you, you can ask me for help. Fourth, if you have any  8, you must put up your hands(举手). You can't talk or stand up without permission（未经许可）. These are all the rules. They are good for you, 9 you must follow them. I hope we can have a good 10 every day.

在草原上人工种草，为防止鸟把草籽吃掉，用网把实验区罩上．后来发现，草的叶子几乎被虫子吃光．造成这种现象的原因是（  ）

如图是探究液体内部压强规律的实验装置，容器中装有水，P是装有橡皮膜的探头，图中探头上的橡皮膜向上，若保持探头深度不变，则（　　）

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