阅读材料，回答问题。

材料一：

材料二：明史记载：“筑敌台三千，起居庸至山海，控守要害……边备大饬，敌不敢入犯”。康熙帝经过长城时曾作诗：“形胜固难凭，在德不在险”。

材料三：

   Mr White works in an office. He liked reading in bed when he was at school. It was bad for his1  and now he has near sight (近视). But he wouldn't want 2 to know about it and he never wears a pair of glasses. It often 3 him some trouble.
   One winter morning he was sent to a village school on business. He 4 a bus at a stop in a small town. Then he had to walk there. The road to the village wasn’t smooth(平坦). He fell over some times and it 5  his clothes dirty. 6  he got to the village. Suddenly it began to blow and it got colder. He was looking for the school while his 7 was blown off. He began to run after it but he couldn't get it. He couldn't understand why his hat ran into a house as if(似乎) it had 8 . And he ran into the house，9.
A woman stopped him and shouted angrily, “10 are you running after my hen for？”

2014年索契冬奥会上我国选手张虹取得了1000m速度滑冰金牌，在比赛过程中，下列有关说法错误的是（   ）

猜想一：琴弦发出声音的音调高低，可能与琴弦的横截面积有关

猜想二：琴弦发出声音的音调高低，可能与琴弦的长短有关

猜想三：琴弦发出声音的音调高低，可能与琴弦的材料有关

为了验证上述猜想是否正确，他和同学们找到了表中所列4种规格的琴弦，进行实验．

在右栏中找出左栏问题的答语.

①What club does he want to join? ____   A. He's reading a book.

②Are you using the computer? ____      B. I like cats.

③What animals do you like?____        C. No, I don't.

④Can he play the guitar?____         D. Because they are friendly.

⑤How do they get to school? ____      E. They are from China

⑥What time does he go to bed? ____  F. He wants to join the music club.

⑦Why does he like dogs? ____       G. Yes, I am.

⑧Where are pandas from? ____     H. No, he can't.

⑨What's he doing now? ____      I. They ride their bikes.

⑩Do you have to clean your room? ____  J. At 9:30.