标签:
红宝石矿物晶体矿物标本何不来看看 |
利比里亚位于非洲西部。北接几内亚,西北界塞拉利昂,东邻科特迪瓦,西南濒大西洋。势东北高,西南低,北部内陆为低高原,中部为和缓丘陵,沿海有狭窄的平原,内陆为高原和山地。河流众多,有卡瓦拉河、塞斯托斯河等。西部沿海有皮索湖。铁矿砂、黄金、钻石的生产是其国民经济的主要支柱,均供出口。
附上参数:
【化学组成】Al2O3。
【晶体结构】属三方晶系。
【形态】晶体常呈柱状、桶状、腰鼓状,还有粒状、块状。
【物理性质】玻璃光泽、透明至不透明。二色性明显,非均质体。硬度为9,密度3.95-4.10克/立方厘米。无解理,裂理发育。
【鉴定特征】硬度测试。测其折射率。高档红宝石应送专业检测机构鉴定。
【成因及产状】为高铝质沉积岩之“变成矿床”。
【主要用途】重要的激光发生器,手表轴承。质优者为宝石原料。矿物研究与收藏。
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Do you speak
English
一、情景对话:
Hey , are you two free on Saturday? 嗨,你们俩星期六有空吗?
Yeah! What do you have in mind? 是的,怎么了?
I’d like to take you to …我想带你们去。。。
….take us to dinner? ….带我们去吃晚餐?
Cool! I really enjoyed that bug pizza we had last time! 酷! 我喜欢我们上次吃的虫子披萨!
No, no! 不,不!
I want to take you to study a foreign language! 我想带你们去学外语!
Study a foreign language? 学外语?
Sure! 对
Wouldn’t it be great to speak another language? 能说外语很棒,不是吗?
It would be so useful! 外语真的很有用!
It would ? 是吗?
Yeah, just think how much fun it would be sing in another language! 当然,想想,用外语唱歌有多有趣!
Really? Okay! 真的吗?好吧!
Yeah, let’s try it! 好吧,让我们试试!
All right then, repeat after me! 好了,跟我读!
二、单词:
free 空闲的
pizza 比萨饼
一、情景对话:
Hey , are you two free on Saturday? 嗨,你们俩星期六有空吗?
Yeah! What do you have in mind? 是的,怎么了?
I’d like to take you to …我想带你们去。。。
….take us to dinner? ….带我们去吃晚餐?
Cool! I really enjoyed that bug pizza we had last time! 酷! 我喜欢我们上次吃的虫子披萨!
No, no! 不,不!
I want to take you to study a foreign language! 我想带你们去学外语!
Study a foreign language? 学外语?
Sure! 对
Wouldn’t it be great to speak another language? 能说外语很棒,不是吗?
It would be so useful! 外语真的很有用!
It would ? 是吗?
Yeah, just think how much fun it would be sing in another language! 当然,想想,用外语唱歌有多有趣!
Really? Okay! 真的吗?好吧!
Yeah, let’s try it! 好吧,让我们试试!
All right then, repeat after me! 好了,跟我读!
二、单词:
free
foreign language 外语
useful 有用的
repeat 重复
三、讲解:
1.Are you free? 你有空吗?
Hey, are you two free on Saturday? 嗨,你们星期六有空吗?
Are you free tonight? 今天晚上你有空吗?
Are you free after work? 下班后你有空吗?
Are you free for dinner? 你有空吃晚饭吗?
2.I’d like to … 我想去...
I’d like to see a movie this weekend. 这个周末我想去看场电影.
I’d like to visit the Shanghai Grand Theatre. 我想去参观上海大剧院.
I’d like to have a cup of coffee. 我想去喝一杯咖啡.
Cool! I really enjoyed that bug-pizza we had last time! 酷!我喜欢我们上次吃得虫子比萨.
Study a foreign language? 学外语?
Wouldn’t it be great to…?那不是很好吗?
Wouldn’t it be great to speak another language? 能说外语那不是很好吗?
Wouldn’t it be great to go swimming on such a hot day? 天这么热去游泳不是很好吗?
Wouldn’t it be great to have a party tonight? 今天晚上举行个聚会不是很好吗?
Wouldn’t it be great to learn something new? 学点新东西不时很好吗?
Think how much fun it would be …! 想想该多有趣啊!
Yeah, just think how much fun it would be to sing in another language! 当然,想想用外语唱歌该多有趣啊!
Think how much fun it would be to visit Australia! 想想去澳大利亚该多趣啊!
Think how much fun it would be to walk along the beach! 想想在海边散步该多有趣啊!
Have something /somebody in mind 想着某人/某事
We need a new cook.我们需要一个新厨师.I have someone in mind. 我想到一个人.
Really ? 真的吗?
I’ve got two brothers and a sister. 我有两个哥哥,一个姐姐.
三、讲解:
1.Are you free? 你有空吗?
Hey, are you two free on Saturday? 嗨,你们星期六有空吗?
Are you free tonight? 今天晚上你有空吗?
Are you free after work? 下班后你有空吗?
Are you free for dinner? 你有空吃晚饭吗?
2.I’d like to … 我想去...
I’d like to see a movie this weekend. 这个周末我想去看场电影.
I’d like to visit the Shanghai Grand Theatre. 我想去参观上海大剧院.
I’d like to have a cup of coffee. 我想去喝一杯咖啡.
Cool! I really enjoyed that bug-pizza we had last time! 酷!我喜欢我们上次吃得虫子比萨.
Study a foreign language? 学外语?
Wouldn’t it be great to…?那不是很好吗?
Wouldn’t it be great to speak another language? 能说外语那不是很好吗?
Wouldn’t it be great to go swimming on such a hot day? 天这么热去游泳不是很好吗?
Wouldn’t it be great to have a party tonight? 今天晚上举行个聚会不是很好吗?
Wouldn’t it be great to learn something new? 学点新东西不时很好吗?
Think how much fun it would be …! 想想该多有趣啊!
Yeah, just think how much fun it would be to sing in another language! 当然,想想用外语唱歌该多有趣啊!
Think how much fun it would be to visit Australia! 想想去澳大利亚该多趣啊!
Think how much fun it would be to walk along the beach! 想想在海边散步该多有趣啊!
Have something /somebody in mind 想着某人/某事
We need a new cook.我们需要一个新厨师.I have someone in mind. 我想到一个人.
Really ? 真的吗?
I’ve got two brothers and a sister. 我有两个哥哥,一个姐姐.
Really ? 真的?
Let’s try it! 让我们试试看!
Have you ever eaten cheese before? 你以前吃过奶酷吗?
Let’s try it! 让我们试试看!
Have you ever eaten cheese before? 你以前吃过奶酷吗?
No ,
let’s try it!
没有,让我们试试.