标签：Reproduce 相关文章
Hunting Rules Have Changed Mama Bear Care In North America, many critters commonly encountered todaylike wild turkeys or white-tailed deerwere brought back from near oblivion through conservation efforts led by hunters. Meanwhile, in Africa, some of
2018年科学美国人5月
VOICE ONE: Im Mary Tillotson. VOICE TWO: And Im Steve Ember with the VOA Special English program, PEOPLE IN AMERICA. Today, we tell about writer Langston Hughes, who has been called the poet voice of African Americans. (MUSIC) VOICE ONE: Langston Hug
名人轶事
AGRICULTURE REPORT - Poplar Trees as Pollution Fighters By Mario Ritter Broadcast: Tuesday, August 10, 2004 This is Steve Ember with the VOA Special English Agriculture Report. Poplar trees can be cut
农业与发展
He goes to his backyard. He sees something. It is small and slimy. It is a lizard! He puts it on his hand. He brings it inside his house. He shows it to his parents. He tells them he wants to keep it. They say no. They say lizards need to be outside.
英语第2级听力-English Level 2
Why are there males and females? Why are there two sexes instead of three, or twelve, or one? On todayss Moment of Science we'll learn why two is the magic number. Let's start with why there is sex at all. When two organisms reproduce sexually, sperm
英语听力文摘 English Digest