A:用残渣来培育食用菌和蛆蛹,实现了能量的反复利用
B:用玉米的副产品玉米芯生产木糖醇,可增加经济效益
C:用蛆蛹粪便作有机肥还田,利用了生态系统物质和能量循环原理
D:在离开人的管理条件下,该生态工程仍可能正常运转
假设你是Li Ming, 以下是你的美国笔友Tina发给你的一封电子邮件,请你根据该邮件内容给Tina回一封邮件。
From:
Tina
To:
Li Ming
Subject:
I am coming!
Hi Li Ming,
How is everything? I'm very happy that the holidays are coming. I want to go to your hometown to visit you in September. Is this good? What's the weather like in your hometown? And what should I take with me?
I know Mid-autumn Festival comes in September, and it is a very important festival for you celebrate it?I'm looking forward to your reply.
Best wishes to your parents!
Yours,
要求:1)考生需按电子邮件格式来完成整个邮件;
2)邮件中不能出现真实姓名、校名等相关信息;
3)字数90~110。
From
To
Subject
已知白磷的着火点是40℃,利用白磷、铜片、热水和冷水不能达到验证“可燃物燃烧需要达到着火点”的实验是( )
—It's hot today. Have some ________, please.
—No, thanks. I'm not thirsty at all.
重力的大小还跟物体所在的____和____有关。物体在极地受到的重力比在赤道要略____些,在山脚受到的重力比在山顶要略____些。同一个物体在不同星球上受到的重力____。