“既非副贰，又非属官，故常与知州争权。每云：‘我是郡监，朝廷使我监汝!’举动为其所制’。”材料描述的是（ ）

阅读下列短文，从下面每小题的A、B、C、D四个选项中选出最佳选项。

B

    A group of children meet in the library each week during lunchtime. They are famous as the Miss Margaret Fan Club. Every Thursday, the twelve members of the Miss Margaret Fan Club make their way to the study center in the back of the library.
    The first Thursday they met, Miss Margaret greeted them with a little talk.
    "Welcome to the first meeting of the writing club!" she said. "During the school year, we will meet here to work on story writing. At the end of the year, I will put all of your stories together in a book."
    Miss Margaret gave a pencil and two pieces of paper to each student.
    "Now, your first homework is to think of a character. Now, try to think about an interesting person. When you think of this person, write down all the details(细节)about him or her in your head. "

如图所示，某同学在倒置的漏斗里放一个乒乓球，然后从漏斗口向下用力吹气，并将开始顶住乒乓球的手指移开，则下列分析正确的是（   ）

语法填空

    Club sports — for those just like sports

    Many colleges have established many club sports, ____ to meet a special interest or fill a gap ____ an intercollegiate(校际的) team is not available. Some of sports, like fencing, crew and rugby, are sometimes ____ (compete) for club members. They are often played with other colleges and sometimes with community groups. These clubs give you the opportunity ____(play) a sport you love or learn a sport that is new to you. The one drawback(缺点) to club sports is ____ colleges often don't fund(提供资金) them. In these cases, club members have to work hard to organize fund-raisers and collect money to keep their sports ____(go).

    Club sports are less time-consuming ____ other athletic items, and you can easily miss a practice or even a competition if your academic or work commitments are ____(particular) demanding at a certain point. You can also leave a club sport if you find it just isn't working out. However, it's ____ (worthy) it to stick with a club sport for a while.

    Most colleges have a full range of teams, so you can attend sports competitions year-round. At bigger schools, larger sports, like football and basketball, may attract fans from all over the area. ____(small) sports, however, will also attract a group of fans.

牧草留种区，为了预防鸟啄食草子，用网把留种地罩上，后来发现，草的叶子几乎被虫吃光，产生这种现象的原因是