先通读下面的短文，掌握其大意，然后从A、B、c、D四个选项中选择可以填入空白处的最佳答案。
Saturday, February 25th
The Turn off (关掉) TV Week starts today. People who organize (组织) it say that TV is a bad thing. I' m not sure if they're 1 .
First of all, the organizers say that children today are in bad physical condition (身体状况) because they 2 almost all their free time in front of the TV. But a 3 of 10,000 American children aged 10 to 15 found no connection (联系,) between TV and physical health. Children who don't watch TV don't always do more 4 .
Of course, there are some terrible programs on TV. 5 I don't think we should say no to TV. We 6 need to choose programs good for us ourselves. Another 7 that the organizers agree on （同意) is that TV stops us from talking with others. An American study found that parents in homes with no TV had an hour of talk with 8 children every day. In other homes, there was only 38 minutes of talk …… a week! That's bad. But TV can also bring people together and 9 to start a talk. Is there a better way to start a talk than by talking about, the latest popular programs?
Turn off my TV? OK. But I also10 to turn it on when there's something good on.
C(g)+D(g)，当下列物理量不发生变化时，能表明该反应已达到该条件下的最大限度的是 
，BD是角平分线，DE⊥BC于点E,若AD=3，BC=4，求△BDC的面积．