细胞群体动力学

新标准初中英语九年级(下):UNIT1 World population

[00:01.84]3 Listen and complete. [00:06.70]What have the children done for their project [00:10.30]on population? [00:11.96]Listen and complete their sentences. [00:16.14] [01:04.64]4 Listen and complete. [01:08.78]Listen and fill in the missing info

发表于:2018-12-29 / 阅读(96) / 评论(0)

外研社新标准初中英语九年级

VOA慢速英语2010年-Development Report - In Developing Wor

This is the VOA Special English Development Report. Sending and receiving money by text message. Sharing crop prices. Just talking to a loved one far from home. These are some of the ways that mobile phones have changed lives in developing countries.

发表于:2019-01-12 / 阅读(37) / 评论(0)

2010年VOA慢速英语(五)月

Shanghai Struggles with Growth

Beijing Capital International Airport ranked at the bottom in the on-time performance report with just 18.3-percent of commercial passenger flights leaving on schedule. Shanghai Pudong International Airport reported the second worst departure record

发表于:2019-01-19 / 阅读(33) / 评论(0)

世界各地新闻集锦

科学美国人60秒 SSS 2014-07-02

This year, the number of mobile phones on cell networks is expected to surpass the Earth's population. More people now own cell phones than actually have access to working toilets. James Meadow, a microbial ecologist at the University of Oregon. Hidd

发表于:2019-01-20 / 阅读(36) / 评论(0)

2014年Scientific American(七)月

纯正英语一分钟-population

The worlds population is getting bigger and bigger. Theres a population explosion in some countries. Im not sure if this is good or bad. The Earth can only support a limited number of people. One day, the worlds population will be too big to feed eve

发表于:2019-01-21 / 阅读(124) / 评论(0)

纯正英语一分钟

英语词汇分类：物理

matter 物质 energy 能 vacuum 真空 liquid 液体 fluid 流体 solid 固体 body 物体 mass 质量 weight 重量 density 密度 specific gravity 比重 gravity 重力 velocity 速度 kinetic energy

发表于:2019-02-07 / 阅读(66) / 评论(0)

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学英语单词

abdominoscopy

air sampling rig

air-speed calibration card

Alligny-en-Morvan

alongside

alum precipitate

aluminium autunite (sabugalite)