若3×9^m×27^m=3¹¹，则m的值为（　　）

把一个100Ω的电阻与一个0.1Ω的电阻并联，并联后的电阻（　　）

①There is a ping-pong game on April ____ (twenty-nine)．

②____ Tom ____ (like) the tennis game?　

③Jim ____ (have) an art class every day.

④Do you know his brother is only 5 ____ (year) old?

⑤ My mother wants ____ (have) a party for me.

⑥Those boys and girls are all ____ (China).

⑦ -How many ____ (sweater) do you have?        -Three.

⑧Today is my ____ (twenty) birthday.

⑨They want to have two baseball ____ (game).

⑩When ____ (be) the School Day?

某几何体的三视图如图所示，则该几何体的体积是（　　）