Who is the man a blue shirt? I have never seen him before.
A. is wearing B. dressed up
C. dressed in D. worn
你堂兄建华在国外学习，你们经常用英文通信。他即将完成学业，不久前来信就是否回国工作征求你的意见。请根据下列提示回信：
1. 建议他回国；
2. 你的理由是：学有所用，就业容易；照顾父母。
注意：1. 词数100左右；
2. 行文应连贯，内容应完整；
3. 开头语与落款已为你写好。
June 8th
Dear Jianhua,
I’m very glad to have received the letter you sent me two weeks ago. ___________________________________________________________________
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Best wishes, Minghua
My name is Li Dear Bob,
Hello, I learnt about you from my English teacher,
Miss Fang. I’d like to1. _______(成为) your pen friend, and get to k2.________ more about your country.
First, let me tell you something about 3.________. My name is Li Hua. I live in Beijing, 4._____ is the 5._______(首都) of China. I go to Hongqi Middle School. It’s a large and beautiful school, and I like it very much.
We study quite a few s6._______, such as Maths, Chinese, English and physics. I used to 7.______ table tennis a lot in my spare time, but now I am i8._______ in football. Do you play any ball games? What is your 9.______(最喜欢的）sports? I look forward to h10._____ from you soon.
根据中文提示，填入适当的单词使句子的意思正确完整。
1.Impressed by the luxurious _____________(环境), he didn’t want to leave.
2.His first speech as president made a strong i____________ on his audience.
3.She looked beautiful on her w_________ day.
4.You will be informed when the book becomes a__________.
5.We c__________ 5000 yuan to the earthquake fund.
6.She has determination while her brother ________(缺乏).
7.He is a c________ boy who is always asking questions.
8.Your comments indicate a serious _____________ (误解) of the situation.
9.As we know, it is very rough to learn __________ (高等) maths well.
10.One of the car’s main _________ (吸引力) is its low price.
Every living cell contains genes. They are too small to be seen in a microscope, but they are very important. Each set of genes in the body contains all the instructions needed to make a human being. Some genes determine hair color. Some determine the shape of a nose. Some genes help determine your height and even your weight.
Genes are made of a chemical called DNA-the letters stand for deoxyribonucleic acid(脱氧核糖核酸). In the early 1950's, two scientists, Francis Crick and James Watson, figured out how the parts of DNA fit together. Once scientists understood this structure, it became possible to take pieces of DNA apart and put them together in new ways. New kinds of genes could be made in this manner.
Scientists have studied the genes of many plants and animals. They have worked out which genes affect the color of a tomato and the thickness of its skin. Working out which genes determine which features is called genetic mapping, scientists have begun the Human Genome Project, an ambitious effort to map all the genes in the human body.
Some genes may be defective(有缺陷的). For example, something might be wrong with the gene that makes blood clot(凝聚). A baby born with this defective gene could suffer serious hemorrhages(出血) or even bleed to death because his or her blood fails to clot. If scientists ever learn how to map all the genes in our bodies, they can determine whether or not an unborn child has any defective genes. They might even discover how to treat these genes before the child is born.
1.What was the achievement of Francis Crick and James Watson?
A. They discovered why people have different hair colors.
B. They learned that some people bleed for long periods of time.
C. They looked at human cells under the microscope.
D. They worked out the structure of DNA.
2.What is the main idea of this passage?
A. Defective genes can never be repaired.
B. Genes are too small to be seen through a microscope.
C. Genes help scientists understand how living things develop their characteristics.
D. The Human Genome Project may explain the role of every gene in the body.
In 1752, three years after two Scotsmen, Alexander Wilson and Thomas Melville, fastened thermometers to kites to record the temperature of clouds, Benjamin Franklin made his famous experiment with a kite, a string, and a key. Franklin hoped to show that nature's tremendous displays of electricity in lightning were the same thing as the feeble electric sparks scientists of the day were producing in their laboratories. He built a square kite to which he attached an iron wire. He flew the kite with a hemp string(麻线), and near the base of the string he tied a large brass key. The kite rose into a dark thundercloud, where the iron wire picked up electrical charges. Franklin noticed that the strands of the string(绳串) were beginning to stand up with electricity. As rain wet the string, it conducted more electricity. Standing in the shelter of a shed, Franklin cautiously reached out his finger to touch the brass key. A series of sparks jumped from the key to his finger. He thus proved that lightning and electricity are the same. We now know that this experiment was a dangerous one, for Franklin might have been killed by a bolt of lighting.
1.The best title for this passage is ________.
A. The Discover of Electricity
B. The kite and Science
C. Franklin, a Great Scientist
D. Franklin's Experiment with Lightning
2.According to the passage, Benjamin Franklin ________.
A. recorded the temperature of clouds
B. was killed by a bolt of lightning
C. proved that lightning and electricity have the same essential nature
D. proved that lightning can be controlled by man
3.Two Scotsmen experimented with kites in ________.
A. 1752 B. 1746
C. 1749 D. 1755
4.Franklin did not use a ________.
A. string B. wire
C. thermometer D. key
5.The fact that Franklin was not injured was apparently due to ________.
A. wisdom B. luck
C. the materials D. the shed's protection
