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[主观题]
In the test carried out by Dr.Marzluff and two students, those in neutral mask trapped and
banded seven crows on the university campus.
A．Y
B．N
C．NG
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A．Y
B．N
C．NG
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更多“In the test carried out by Dr.…”相关的问题
Why is the tank test carried under water？
A．Because the water pressure is greater than air pressure.
B．Because the first comets crashed in the water.
C．Because there is less damage when the explosion takes place under water.
D．Because it is the only way available for engineers to find out which part has cracked.
A．The license office provides the test vehicle.
B．The examiner shows how to start, stop or park.
C．The examiner watches you driving in your car.
D．The test is carried out where there is little traffic.
What does the passage mainly talk about？
A．It has been proved that magnets do have certain effect on living beings.
B．How iron atoms in a magnet are crammed together.
C．Scientists carried out experiments to test the existence of magnets.
D．It is very easy to test the existence of magnets.
According to the news, France was strongly criticized for______.
A．conducting five nuclear tests on Wednesday.
B．carrying out a series of nuclear tests in the Pacific.
C．getting disappointing results in the nuclear program.
D．refusing to sign a global treaty banning nuclear tests.
When might you need to give blood for a personality (个性) test？ The answer is that you need to do so when you ask for a job.
Some people believe that your blood group hides no secrets. It shows the" real you". And the owners of certain blood groups might be particularly good or bad at certain tasks. This is the very reason why you could be asked to offer your blood group before being given a job.
The new idea was carried out first in Japan and now it had been brought over to other parts of the world. One important business company in Japan is quite special about its needs: "For our office members, we must have 30 percent of group A and 15 percent of AB, 25 percent of O and 30 percent of B.
Do you happen to know your own blood groups？ It seems that if you belong to blood group O, you can get things done and sell the goods well. Blood group A are the thinkers, while blood group B are highly creative (创造力的). And if you have problems, ask the ABs to solve them. So if you visited the Japanese company, you would find the O types out selling goods and A types keeping orders in the office.
According to the passage, ________.
A．four types of the blood were discovered by Japan
B．people of good blood might do their work very well
C．knowing your own blood group you could get a good idea
D．more and more countries accepted the new idea about blood group
听力原文： I am writing to thank you for the interesting reports which appeared in the July '94 edition of Saturday Evening Post. I am interested in your reports since B12 deficiency is an inherited disorder in my family. In the late 1950s and early 1960s, a research project was carried out on it by London medical school.
My grandmother was 49 when she started vitamin t312 injections in 1949, She was admitted to the hospital with a blood disease. My mother was 63 when she began vitamin B12 injections. After reading your article, I believe her treatment was started too late. At the time, she almost lost her eyesight and was told that she had another diseases.
Earlier this year, I visited my doctor and explained that 1 felt very tired and asked for a blood test to establish whether I was suffering from B12 deficiency. I was told I was much too young and that only people in their 80s suffered B12 deficiency. I told him he was wrong and that research was carried out on my family 30 years ago.
I have always believed that prevention is better than cure. I now know why I love Kellogg's Honey Nut Cornflakes. They contain vitamins, including B12! If foods contain added vitamins, as
you suggest in your article, then B12 deficiency and diseases associated with it should be left to the past.
(33)
A．It is a thank-you letter to a medical doctor.
B．It is an advertisement for vitamin B12.
C．It is a letter to the editor of a magazine.
D．It is a preface to a book on vitamins.
How to approach Reading Test Part Five
&8226;This part of the Reading Test tests your ability to identify additional or unnecessary words in a text. Most lines contain one extra word which is incorrect.
&8226;Read the whole text quickly to find out what it is about. As you read, try to identify the words that are incorrect. Make sure you consider whole sentences, and not each line separately.
&8226;Then read the text again, and write down the extra words.
&8226;Remember there will be only one extra word in a line, and some lines are correct.
&8226;Read the article on the opposite page about identifying the training needs of staff.
&8226;In most of the lines 34 - 45 there is one extra word. It is either grammatically incorrect or does not fit in with the meaning of the text. Some lines, however, are correct.
&8226;If a line is correct, write CORRECT on your Answer Sheet.
&8226;If there is an extra word in the line, write the extra word in CAPITAL LETTERS on your Answer Sheet.
&8226;The exercise begins with two examples, (0) and (00).
Identifying training needs
The financial benefits of training are sometimes hard to demonstrate, and often the
training budget is the first to be reduced instead when spending is under pressure. For
34 this reason, and given that the need for any corporate spending to provide maximum
35 value for money, it is important for the differences between individuals must to be
36 taken into account when considering training requirements. This makes for far more
37 effective training than a programme is based solely on generalisations about staff. After
38 all this, our abilities differ, and variations in previous experience can also play a
39 significant role in learning. Identifying training needs and their capabilities on an
40 individual basis is often carried out in appraisal interviews. In those workplaces where
41 each employee's productivity is measured, such records may be considered during the
42 appraisal, allowing for the possibility that inadequate training can be identified as if the
43 reason for low productivity. Training requirements are also evaluated in such
44 assessment centres, and in which groups of staff are observed while taking part in job
45 simulation activities. Although these are often used to assess potential for promotion, but can also show employees' training needs within their current job.
(34)
Other groups that have attempted to correct the genetic defect that causes cystic fibrosis have used viruses as "vectors" (媒介) to carry the healthy gene into target cells. Unfortunately, viruses can also cause inflammation in the lungs, an undesirable side effect in CF patients, whose lungs are already diseased. The new method for introducing corrective genes into the lungs of CF patients promises to be much safer.
Cystic fibrosis is caused by defects in a gene called CFTR, which plays a part in the transport of chloride ions(离子) out of the cells lining the lungs, airways and gut. Defects in this gene mean that patients have difficulty expelling mucus(黏液) and inhaled (吸入) microorganisms from their lungs. As a result, they are very susceptible to lung infections, and usually die at around 30 years old.
As an alternative to the viral vector, the researchers, linked loops (环)of DNA containing healthy copied of the CFTR gene to microscopic liposomes. When the liposomes come in contact with a cell, they fuse(融合) with its outer membrane, and release the DNA into the cell's interior. To test the system, the team sprayed the liposomes into the noses of volunteers with cystic fibrosis. "The cells lining the nose are very similar to those lining the lung," explains David Porteous of the human genetics group in Edinburgh. But the ceils in the nose are easier to monitor, and the risks are lower if any nasal (鼻的)cells are damaged.
In the event(结果,到头来), none of the volunteers suffered any unpleasant side effects. And a single spraying partially corrected the cystic fibrosis defect. The researchers assessed the effectiveness of the treatment by measuring the voltage(电压,伏特) across the layer of cells lining the nose. This voltage is higher in cystic fibrosis sufferers than in healthy people. A single spraying reduced this difference by around 20 per cent. The re-searchers reported that the effect lasted for up to a week.
The British researchers have yet to test their spray in the lungs, but are confident that the liposomes will not cause inflammation. The question, however, is how effective the shuttle system is. In the nose, the researchers had to add more copies of the healthy CFTR gene to match the performance of the adenovirus. This is because adenoviruses carry genes directly to the cell' s nucleus, ensuring that the instructions they carry are read. Genes carried by liposomes are only guaranteed a ride into the cell's cytoplasm, and fewer will find their way to the nucleus. Many will be broken down by the cell's waste disposal system before they get there.
Bob Williamson, who heads the group at St. Mary's Hospital, says this will require much more efficient vectors. "People in 10 to 15 years will laugh at the crudity of the liposomes and viruses that we're using today, " he says. The aim is to make customized vectors which combine the best aspects of both systems, and include other genetic sequences to ensure that the information carried by the healthy CFTR gene is used by the target cells lining the lungs.
Liposomes were tested as a vector for ferrying replacement genes into the lungs of CF patients.
A．Right
B．Wrong
C．Not mentioned
The Origin of the Air Mail
At Blackpool Holt Thomas and Graham-White agreed to make a practical experiment in carrying mails by aeroplane. The idea, as it was first worked out, was for the aeroplane to fly from Blackpool airport across to Southport airport, and for the mails to be taken over by the Post Office there. But the programme had to be changed owing to a series of high winds. What happened in the end was that Graham-White took a mail-bag in his plane, and made a flight with it across country for a distance of about seven miles, returning to the airport. This experiment gave Graham-White the honour of being the first airman in England to carry a bag of mail across country in an aeroplane. Letters and postcards which were carried in this test, and which had a special stamp recording the fact, soon became much sought after by collectors.
The second and more important experiment in British air mail transport took place in September 1911, and was the first of its kind in this country to obtain the official permission of the Postmaster-general. It was indeed one of the historical events in our airmail development. In this case as many as 130,000 letter and postcards were carried by aeroplane between London and Windsor. One of the airmen engaged in this pioneer service was the famous Gustav Hamel, flying a monoplane. I remember going out one afternoon to see him start off with one of the bags of mail. It was an extremely bad day for flying, and just before the time due for the start, the wind was blowing at nearly 50 miles an hour. None of the other pilots would have thought of going up, but Hamel—one of the finest of all pilots of the British monoplane—was not to be stopped. He jumped into his machine and fairly shot off the ground. The monoplane, so long as it was near the earth, was thrown about like a small boat on an angry sea. But Hamel gave a splendid exhibition of airmanship; as soon as he reached a great height, conditions became much steadier ,and he finished his journey without accident.
This was an early demonstration that an airplane was more than a fine weather machine, and that it could fight its way successfully through violent winds. This fact impressed the postal authorities a good deal, and helped those who believed that the airplane had a great commercial future.
Holt Thomas and Graham-White were the first airmen to carry the airmail in England.
A．True
B．False
C．Not mentioned
Many genetic defects, such as the hemophilia of European royalty, can be traced back through the family tree. And a genetic counselor can calculate probable risks for couples even before they have defective children. But faulty genes may also occur without warning by mutation in any generation.
In recent years, researchers have detected a number of disorders caused by an extra chromosome, or lack of part of a chromosome. Mongolism, a form. of retardation accompanied by short stature, a flattened nose and broad hands and feet, is caused by an extra chromosome. The parents of such a child have little increased risk of having another Mongoloid.
There are blood, urine and other tests which show promise in detecting more than 100 genetic diseases, including cystic fibrosis, hemophilia and some forms of muscular dystrophy.
Researchers are also detecting genetic defects even before a child is born. "Intrauterine detection," notes Dr. Henry L. Nadler of Northwestern University Medical School, "brings a new dimension to genetic counseling. The physician may now inform. the parents that they will have either an affected or a normal child. "
The original title of the passage can be best replaced by______.
A．Genes and Diseases
B．Genes and One's Characteristics
C．Genetic Defects and the Family Tree
D．Dominant and Recessive Genes
