求科普英语文章!关于“生活与科学”!要做5~10张的ppt的内容(几篇文章合在一起也可以)···最好科学性一点,初高中左右的科普文章

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求科普英语文章!关于“生活与科学”!要做5~10张的ppt的内容(几篇文章合在一起也可以)···最好科学性一点,初高中左右的科普文章
求科普英语文章!关于“生活与科学”!
要做5~10张的ppt的内容(几篇文章合在一起也可以)···最好科学性一点,初高中左右的科普文章

求科普英语文章!关于“生活与科学”!要做5~10张的ppt的内容(几篇文章合在一起也可以)···最好科学性一点,初高中左右的科普文章
My grandmother became a widow in 1970. Shortly after that, we went to the animal shelter to pick out a puppy to keep her company. Grandma decided on a little terrier that had a reddish-brown spot above each eye. Because of these spots, the dog was promptly named Penny.
Grandma and Penny quickly became very attached to each other, but that attachment grew much stronger about three years later when Grandma had a stroke. Grandma could no longer work, so when she came home from the hospital, she and Penny were constant companions.
After her stroke, it became a real problem for Grandma to let Penny in and out because the door was at the bottom of a flight of stairs. So a mechanism using a rope and pulley was installed from the back door to a handle at the top of the stairs. Grandma just had to pull the handle to open and close the door. If the store was out of Penny's favorite dog food, Grandma would make one of us cook Penny browned beef with diced potatoes in it. I can remember teasing my grandmother that she loved that dog better than she loved her family.
As the years passed, Grandma and Penny became inseparable. Grandma's old house could be filled to the brim with people, but if Grandma went to take her nap, Penny walked along beside her and stayed by her side until she awoke. As Penny aged, she could no longer jump up on the bed to lay next to Grandma, so she laid on the rug beside the bed. If Grandma went into the bathroom, Penny would hobble along beside her, wait outside the door and accompany her back to the bed or chair. Grandma never went anywhere without her faithful companion by her side.
The time came when both my grandmother and Penny's health were failing fast. Penny couldn't get around very well, and Grandma had been hospitalized several times. My uncle and I lived with Grandma, so Penny was never left alone, even when Grandma was in the hospital. During these times, Penny sat at the window looking out for the car bringing Grandma home and would excitedly wait at the door when Grandma came through it. Each homecoming was a grand reunion between the two.
On Christmas Day in 1985, Grandma was again taken to the hospital. Penny, as usual, sat watching out the window for the car bringing Grandma home. Two mornings later when the dog woke up, she couldn't seem to work out the stiffness in her hips as she usually did. The same morning, she began having seizures. At age fifteen, we knew it was time. My mother and aunt took her to the veterinarian and stayed with her until the end.
Now the big dilemma was whether to tell Grandma while she was still in the hospital or wait. The decision was made to tell her while she was in the hospital because when we pulled up at the house, the first thing Grandma would look for was her beloved Penny watching out the window and then happily greeting her at the door. Grandma shed some tears but said she knew that it had to be done so Penny wouldn't suffer.
That night while still in the hospital, Grandma had a massive heart attack. The doctors frantically worked on her but could not revive her. After fifteen years of loving companionship, Grandma and Penny passed away within a few hours of each other. God had it all worked out – Penny was waiting at door when Grandma came Home.
我的祖母成了寡妇, 1970 .不久,我们去畜舍挑小狗陪她.奶奶决定对小猎犬了红褐色场以上,每眼.由于这些景点中,狗被及时命名为竹.
奶奶及竹很快成了非常重视对方,但扣押的增长十分强劲,约三年后,当外婆了,终年65岁.外婆不能再工作,所以当她回家,从医院,她和竹不断的同伴.
之后她中风,它成为一个真正的问题,奶奶让竹中出,因为大门在底层的楼梯.这样一个机制,用绳子和滑轮装置,从后门句柄在顶部的楼梯.奶奶刚拉把手打开和关闭车门.如果商店是出一分钱的狗喜爱的食物,奶奶将使我们其中库克竹馅料牛肉与洋葱,土豆而已.我记得取笑我姥姥说,她很喜欢狗比她爱她的家人.
随着岁月的推移,奶奶及竹成为密不可分的.奶奶的老房子可填至7.6人,但是如果奶奶去把她的行动,竹走过身旁待在她身旁,直到她醒来.至于竹岁,她再也无法跳起来于床上,以奠定未来阿妈,让她放在地毯旁边的床上.如果奶奶走进浴室,将竹蹒跚沿她旁边,等候在门外,并陪同她回到床上或椅子.奶奶没任何未经她的忠实伴侣的身旁.
时间来到时,无论是我的祖母和篙生均未能迅速.竹不能惟我独尊很好,奶奶曾多次住院.我叔叔和我住同奶奶,让竹从来孑然一身,连奶奶时,在医院昏迷了.在这些时候,竹坐在窗口看出去,为使汽车奶奶回家就会兴奋等候在门口时,奶奶进来.每颂是一个规模宏大的团聚两者之间.
圣诞节当日,在1985年,外婆又被送往医院.竹如往常一样,坐在看着看着窗外,为汽车带来奶奶家.两个早上后,当狗醒来,她无法似乎出刚度在她的臀部,她平常.同日上午,她又开始发作.在十五岁时,我们才知道这是时间.我的母亲和姑姑把她带到兽医站在一起,她才结束.
现在大难题是,是否告诉奶奶,而她仍然在医院或等待.作出这一决定是为了告诉她,而她在医院昏迷了,因为当我们拉起,在众议院中,第一件事,奶奶会找她心爱的竹看着看着窗外,然后欣逢她站在门口.奶奶有约眼泪,但她也知道他必须这样做,所以一分钱也不会受到影响.
那天晚上,而仍然在医院里,奶奶了大量的心脏病.医生疯狂工作,但她不能唤醒她.经过15年的爱好伴侣,奶奶及竹过世短短几个小时,对方.神了一切工作的出竹被等候在门口时,奶奶回家.