lumps of 一块块(通常指形状不固定的坚硬物质)
iron-rich 含铁量高的
conduct 传导(热)
undersides 底部
out of sight 在视野之外,看不见
detection 探测
测验 请听报道并回答下列问题。
1. According to the text, what is the mystery that has puzzled scientists for a long time?
2. What technology does the Manchester team plan to use to find and dig up the missing meteorites?
3. True or false? The metal rocks are able to conduct the heat of the sun, which enables them to melt and sink downwards.
4. Which word in the text means 'in equal numbers or amounts'?
答案 1. According to the text, what is the mystery that has puzzled scientists for a long time?
The mystery that has long puzzled scientists is why so few iron meteorites are picked up off the ice of Antarctica.
2. What technology does the Manchester team plan to use to find and dig up the missing meteorites?
The Manchester team plans to find the missing meteorites and dig them up with the aid of landmine detection technology.
3. True or false? The metal rocks are able to conduct the heat of the sun, which enables them to melt and sink downwards.
False. The metal rocks are able to efficiently transfer heat to their undersides where they can melt the surrounding ice, and this allows them to sink downwards.
【Hunt for Antarctica's 'missing meteorites' 英国科学家将赴南极寻找“失踪的陨石”】相关文章:
★ Do we need to attend lectures? 大学生是否需要听讲座式课程?
★ Bus for homeless, urban bees 流浪者入住公共汽车、蜜蜂的城市庇护所
★ 球员抑郁和焦虑
★ What your desk says about you 桌面物品的摆放方式可揭示人格特征
★ Samsung smartphone problem, zoo chimps feeling wild 三星智能手机问题,动物园的黑猩猩野性十足
★ Giraffes' decline; female bullfighter 长颈鹿数量骤减,西班牙女斗牛士
★ Russia and the West: Where did it all go wrong?
★ Heathrow expansion and dog lifeguard training 希思罗机场扩建, 救生犬的训练
最新
2019-11-15
2019-11-15
2019-11-15
2019-11-15
2019-11-15
2019-11-15