阅读下面材料，在空白处填入适当的内容(不多于3个单词)或括号内单词的正确形式。
The truth trees are vital to our life is not a secret. They provide us with food, wood and most
(important), oxygen. Now there is one more thing we can add to this list—blocking out harmful bacteria from water.
The discovery (make) by a team
(consist) of scientists from the Massachusetts Institute of Technology (MIT) and high school students
were seeking a natural water filter—one that would help communities in developing countries that do not have
(accessible) to modern water filter systems.
The (research), led by Professor Rohit Karnik, decided to turn to trees for help because they could allow liquid to flow through, while blocking out air bubbles.
They began by cutting 1.5-inch-wide sections of tree bark from the branches of a white pine tree. The people related then tested the wood’s filtering ability by pouring water containing red dye particles of different sizes through. their amazement, they found that it was effective in trapping all the articles.
(encourage), the team conducted
experiment, this time with water that contained bacteria. Sure enough, the sapwood held back 99% of the bacteria, allowing only 1% to flow through.
阅读下面材料，在空白处填入适当的内容（1个单词）或括号内单词的正确形式。
When he was a little boy, Christopher Cockerell once noticed his mother turning the wheel of her sewing machine with her hand. “Won’t it work quickly if a machine (turn) the wheel for you?” he asked. “I suppose it will.” said his mother, without paying any attention to him. Christopher knew she always had a lot of work and that she was
stubborn that he could hardly do anything to change
mind. But he wanted to help. In his bedroom there was a toy steam engine
(buy) by his father as a gift to him. “I will make better use of it,” little Christopher said to himself. So, when his mother was not using her sewing machine, he decided to fix the toy steam engine onto it. When he finished
(do) it, he was quite pleased, thinking his mother would like it. “Very clever,” his mother said when she saw it. But then she sat down and went on turning the wheel
hand. “I
(work) like this for too many years,” she explained. Christopher felt very
(disappoint). He couldn’t understand his mother’s
(behave).
This teaches Christopher a lesson that anyone tries to improve anything has to learn: many people don’t like new ideas.
语法填空
阅读下面材料，在空白处填入适当的内容（不多于3个单词）或括号内单词的正确形式。
One day a young man was walking along the road he heard a cry. It seemed to be coming from underneath a bridge. As he approached the bridge, the sound got
(loud) and then he saw
pitiful sight. There, lying in the muddy riverbed was a little dog about two months old,
front legs were tightly tied with ropes. It had wounds on its head and
(cover) with mud.
The young man wanted to help the dog, as he approached, the dog started to bark. The young man did not give up. He sat down and started
(gentle) talking to the dog. It took a long time but eventually the dog
(stop) barking and the man was able to touch it. The young man carried the dog home, cared for its wounds, and gave it food and water. Even with all of this, the dog was still
(friend) every time the young man approached. But the young man did not give up. Weeks went by and the man continued attending to the dog. Then one day, as the young man approached, the dog wagged its tail.
It was consistent love and kindness _won a lifelong friendship of loyalty.
Camels certainly like eating green grass, not dry grass．But (strange), camels always keep looking for dry grass
their stomachs are filled up.
A classmate of (I) whose home is on the edge of Turpan Basin in Xinjiang told me his home has two camels; he said you could imagine a camel’s appetite, for it can slowly swallow dozens of kilograms of hay (干草)．I asked him
camels eat hay, not green grass．He said the camel is a kind of animal with
strong sense of suffering,
(fear) its master letting it travel through the desert the next day, and the hay in its stomach is more hunger-resistant
green grass.
The camel has the best tolerance．Unfortunately, many people can only see a camel’s outstanding performance, but few understand its (prepare) made for it.
Life, a camel traveling through the desert,
(need) the adequate accumulation, but not everyone can understand it.
阅读理解
Umbrella is what we easily forget and leave behind in our daily life． When the weather is fine, we certainly don’t think of it; only when it's raining, we’ll carry it purposefully． But as soon as the rain stops, most likely we’ll forget we’ve put it． It has to wait patiently and pitifully for
owner to claim it, otherwise it’ll remain alone as a deserted umbrella．
Once I suddenly found my longtime (use) umbrella “disappeared” I really got lost and regretted quite some time
my own carelessness．
Several days later, out of my (expect), I saw it quietly stand in a corner of the house where I worked． I was extremely glad to regain it． Looking carefully at it, though it was so familiar
me, I found for the first time its wooden handle
（wear）out as a result of repeated rain-wash for years． I sought for it only when I needed it． It occurred to me that I should have paid
(much) attention to it．
It sets me thinking． Around us there are always people giving us support in silence just likeumbrella that protects us from the rain or any wretched weather． Will gou think of those individuals
have helped you get through difficlty when you are leading a comfortable life?
阅读填空（共1小题）
My Italian Grandmother was a wonderful woman．I always felt blessed growing up in her home a boy．She worked hard，laughed loud，and was never afraid of
life threw at her．
When she fell and broke her hip in her eighties，my Dad (force) to admit that he could no longer take care of her at home．It was with a heavy heart
Dad moved Grandmother into a nursing home．
Our whole family gathered together for her 90th birthday in the nursing home dining room．It was a wonderful celebration of her life and the love we all had her．
Shortly after that birthday，however，life gave her the (tough) challenge of all as age and illness started to take her mind from her too．The Dementia（痴呆） grew worse and worse．At times when I visited her she didn’t know
I was．During one of these visits I was holding her hand while she slept．When she awoke，her eyes stared at me and I could tell she didn’t recognize
．She looked down at my hand
(hold) hers and instead of pulling hers away，she smiled at me．Then she closed her eyes and went
(peace) back to sleep．I could see then that even though her mind didn’t remember me，her spirit still remembered love．