信不信由你
How long do lions sleep? About 20 hours a day! ……

It takes a 10-year-old kid about 20 minutes to fall asleep. ……

It takes about 20 seconds (秒) for a chameleon (变色龙) to change colors. ……

信不信由你A dream is usually about 20 minutes long. ……

国际空间站升空20年啦！ ……

ZAMBOANGA, Philippines — Muslim rebels abducted 20 people including three Americans from a Philippine island resort on Sunday. The Philippine Government on Monday announced a reward ofUS$20,000 ……

A篇：1-5 CDACB 6-10 DACDA 11-15 BDCAB 16-20 DACBDB篇：1-5 CADBC 6-10 ABDAD 11-15 CDCBA 16-20 BCDBA ……

It takes a 10-year-old kid about 20 minutes to fall asleep. It takes a 10-year-old kid about 20 minutes to fall asleep.    ……

What a small burger! It's only about 3cm wide. How many can you eat? Maybe 20! ……

The Amazon rainforest has been described as the “lungs of our planet”. More than 20% of the planet’s oxygen is produced there! ……

A flea (跳蚤) can jump up to 30cm. That's about 20 times its own body length (长度). ……

The Amazon rainforest has been described as the “lungs of our planet”. More than 20% of the planet’s oxygen is produced there! ……

An elephant’s trunk (象鼻) can hold about 7 liters (升) of water. That’s as much as 20 cans (罐) of cola. ……

December 20, 1999:The Chinese government resumed (恢复) the exercise of sovereignty (主权) over Macau. ……

动物秘密A woodpecker (啄木鸟) can peck (啄) 20 times in a second. ……