马利筋属纤维

英语听力—环球英语 1368 Save The Butterflies

Voice 1 Welcome to Spotlight. Im Joshua Leo. Voice 2 And Im Liz Waid. Spotlight uses a special English method of broadcasting. It is easier for people to understand, no matter where in the world they live. Voice 3 I was watching a butterfly the other

发表于:2018-12-19 / 阅读(34) / 评论(0)

环球英语 Spotlight

【英语时差8,16】想赚钱？来投资乳草

That'true. monarch butterflies lay their eggs on milkweed plants.The caterpillars feed on milkweed, from which they extract substances called cardenolides, a type of chemical that can cause heart arrhythmia. This toxin doesnt affect the caterpillars

发表于:2018-12-27 / 阅读(26) / 评论(0)

英语时差8，16

Young Students Build a Station for Monarch Butterflies

Students at P.B. Smith Elementary Schools ecology club are learning about the life and migration of monarch butterflies. They learn in the classroom about the butterflys need for certain plants. They learn scientific words for the stages of a butterf

发表于:2019-01-03 / 阅读(336) / 评论(0)

2018年VOA慢速英语(七)月

英语听力—环球英语 1225 Friend or Enemy?

Voice 1 Welcome to Spotlight. Im Adam Navis. Voice 2 And Im Liz Waid. Spotlight uses a special English method of broadcasting. It is easier for people to understand, no matter where in the world they live. Voice 1 Human life is full of friends and en

发表于:2019-02-14 / 阅读(33) / 评论(0)

环球英语 Spotlight

2018年CRI Tibet to have universal fibre-optical broadband service

China's Tibet Autonomous Region is about to achieve a universal coverage of fibre-optical broadband service ahead of its schedule. As China further rolled out its universal broadband project, Tibet's broadband service is looking to reach 98% of admin

发表于:2019-02-14 / 阅读(84) / 评论(0)

2018CRI中国国际广播电台

科学美国人60秒 SSS 相生相克

Planting Milkweed for Monarchs? Make Sure it's Native Monarch butterflies depend on milkweed. They lay their eggs on milkweed, and their caterpillars eat only the leaves of the plant. No milkweed means no monarchs. So the best way to help declining m

发表于:2019-02-14 / 阅读(38) / 评论(0)

2018年科学美国人4月

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abnormal network cause