铅球放在水平的海绵上，铅球对海绵的压力大小____（填“大于”、“等于”或“小于”）海绵对铅球的支持力的大小．汽车停在马路上，轮胎对地面产生的压力是由于​____轮胎发生形变而产生的．地面对轮胎的支持力是由于____地面发生形变而产生的．

用have been to/have been in及go的适当形式填空

① David____ to the park just now.

②How long____ he____ this city?

③The Smiths____ Beijing for years.

④—____ you ever____ America?

—Yes, I have been there many times.

⑤ —When____ he____ there?

—He went there an hour ago.

读课文《虎口藏宝》，根据意思写出相应的词语

指艺术形象非常逼真，如同活的一样。____ 

把箱子柜子都翻倒过来。形容彻底翻检。____ 

阅读下面短文，从短文后每小题的四个选项中选出能填入相应空白处的最佳选项

      Sports are very important. People from different parts of the world enjoy sports. Sports are 1 for people's health. Some people like to play sports games by themselves, but some 2 watching others play sports games. They buy tickets or 3 their TV to watch games.

      Sports 4 with the four seasons. People would like to play 5 games in different seasons. Most people's favorite sports are swimming and skating. Swimming is in summer and skating is usually in6. Sometimes they play inside the room. Sometimes they play outside. Some people play sports for 7 and fame while others just play for fun.

     We can 8 sports here and there. Some sports are so 9 that people everywhere like them a lot. Football, for example, is very popular all over theworld. People 10 different countries can't understand each other, but after a game they often become very friendly to each other.