[网络] 保护生物学；保育生物学；生物保护学

初中英语山东版六年级下--Unit 5-SELF CHECK

Unit 5 My favorite subject is science. [00:09.42]Section B [00:12.42]1a Put these days into the correct order. [00:19.99]1b What subjects do you study at school? [00:26.07]Check (）the subjects. [00:29.27]1c PAIRWORK [00:33.11]Ask and answer questio

发表于:2018-12-10 / 阅读(156) / 评论(0)

初中英语山东版六年级下

1200个最常用英语口语单词第五十三单元

abundant [ə'bʌndənt] a.丰富的，充裕的，大量的 biology [bai'ɔlədʒi] n.生物学 community [kə'mju:niti] n.社区，居民 detective [di'tektiv] n.a.侦探(的) exception [ik'sepʃən] n.例外，除外 handful ['hndfl] n.一把，一小

发表于:2018-12-19 / 阅读(141) / 评论(0)

1200个常用英语口语单词（MP3+文本）

英文笑话：biology class 生物课

biology class This happened in a university biology class. The professor was explaining that sperm has a high concentration of dextrose. One freshman girl who looked puzzled asked, Then why doesn't it taste sweet? Notes: 1. This happened in a univers

发表于:2018-12-26 / 阅读(42) / 评论(0)

英语笑话（MP3+文本）

Bush Discusses Conservation and the Environment(2009-1-6)

President Bush Discusses Conservation and the Environment THE PRESIDENT: Thank you all. Please be seated. Thank you for coming, and Happy New Year. Laura and I thank all of our distinguished guests, starting with members of my Cabinet -- Secretary K

发表于:2018-12-30 / 阅读(52) / 评论(0)

美国总统每日发言

雅思写作：Environmental Conservation

雅思写作真题 Nowadays, environmental problems are too big to be managed by individual persons or individual countries. In other words, it is an international problem. To what extent do you agree or disagree? 原创范文 If human beings want to

发表于:2019-01-18 / 阅读(105) / 评论(0)

雅思英语

美国科学60秒 SSS 2013-04-02

Synthetic biologists design and make biological devices and system for useful purposes. Conservation biologists study biodiversity to protect species and habitat.The two group don't talk to each other much.Conservation biologists cannot refer thus or

发表于:2019-01-20 / 阅读(43) / 评论(0)

Scientific American(四)月

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atomic transfer reaction