-
Lesson plans are useful only before the lesson.（）
A . 正确
B . 错误
-
When the readers read to get the general picture, only the main points are what they are interested in, not the detail.（）
A . 正确
B . 错误
-
The radio waves used for radar are very short，only（）long.
A . a few centimeters
B . a few fathoms
C . a few meters
D . a few feet
-
The only places in Australia that experience regular winter snowfall and icy conditions are（）
A . the eastern coastal areas of Queensland
B . the Blue Mountains
C . the New England Tableland
D . the highest peaks of the Snowy Mountains and Victorian Highland
-
The four strokes are called suction, compression, expansion and exhaust, but only （） stroke provides the power to drive the ship.
A . suction
B . compression
C . expansion
D . exhaust
-
On this chart only the principle （） to navigation are shown．
A . equipment's
B . tools
C . apparatus
D . aid
-
If the instructions are D/P the importer’s bank will release the documents to the importer only against payment.
A . 正确
B . 错误
-
Not only the workers but also the manager (is, are) against the decision.
-
Easter Sunday is the only day of the year when tourists are allowed to wander over the White House lawn.
-
Prized for centuries for their beauty, roses are probably the world's _____ plants.
-
We are the only power willing to take the _____ in the long struggle to end the war.
-
Plum blossoms, orchids, bamboo and chrysanthemums are four representative plants, some of which symbolize the noble characters in Chinese culture.
-
The radio waves used for radar are very short ， only______long ．
-
To test whether plants are a sot,roe of methane, the scientists created
A.a oxygen-free environment
B.an environment with the same concentration of oxygen as the Earth has
C.a carbon dioxide-free environment
D.an environment filled with the greenhouse gas
-
Only Lake （) belongs to America completely while the other four are shared by the two
Only Lake () belongs to America completely while the other four are shared by the two countries.
A.Ontario
B.Superior
C.Huron
D.Michigan
-
Questions 36 to 40 are based on the following. In the early days of nuclear power, the United States made money on it. But today opponents have so complicated its development that no nuclear plants have been ordered or built here in 12 years.
The greatest fear of nuclear power opponents has always been a reactor “meltdown” (堆内熔化). Today, the chances of a meltdown that would threaten U.S. public health are very little. But to even further reduce the possibility, engineers are testing new reactors that rely not on human judgement to shut them down but on the laws of nature. Now General Electric is already building two advanced reactors in Japan. But don’t expect them ever on U.S. shores unless things change in Washington.
The procedure for licensing nuclear power plants is a bad dream. Any time during, or even after, construction, an objection by any group or individual can bring everything to a halt while the matter is investigated or taken to court. Meanwhile, the builder must add nice-but-not-necessary improvements, some of which force him to knock down walls and start over. In every case where a plant has been opposed, the Nuclear Regulation Commission has ultimately granted a license to construct or operate. But the victory often costs so much that the utility ends up abandoning the plant anyway.
A case in point is the Shoreham plant on New York’s Long Island. Shoreham was a virtual twin to the Millstone plant in Connecticut, both ordered in the mid-’60s. Millstone, completed for $101 million, has been generating electricity for two decades. Shoreham, however, was singled out by anti-nuclear activists who, by sending in endless protests, drove the cost over $5 billion and delayed its use for many years.
Shoreham finally won its operation license. But the plant has never produced a watt of power. Governor Mario Cuomo, an opponent of a Shoreham start-up, used his power to force New York’s public-utilities commission to accept the following settlement; the power company could pass the cost of Shoreham along to its consumers only if it agreed not to operate the plant! Today, a perfectly good facility, capable of servicing hundreds of homes, sits rusting.
第36题：What has made the procedure for licensing nuclear power plants a bad dream？
A) The inefficiency of the Nuclear Regulation commission.
B) The enormous cost of construction and operation.
C) The length of time it takes to make investigations.
D) The objection of the opponents of nuclear power.
-
The Untied States and Canada are lands of____except for the Indians, who are the only true natives.
A．emigrants
B．immigrants
C．dwellers
D．inhabitants
-
Passage Four:Questions 26 to 30 are based on the following passage.Even plants can run a fever, especially when they’re under attack by insects or disease. But unlike humans, plants can have their temperature taken from 3,000 feet away-straight up. A decade ago, adapting the infrared (红外线) scanning technology developed for military purposes and other satellites, physicist Stephen Paley came up with a quick way to take the temperature of crops to determine which ones are under stress. The goal was to let farmers precisely target pesticide (杀虫剂) spraying rather than rain poison on a whole field, which invariably includes plants that don’t have pest (害虫) problems.
Even better, Paley’s Remote Scanning Services Company could detect crop problems before they became visible to the eye. Mounted on a plane flown at 3,000 feet at night, an infrared scanner measured the heat emitted by crops. The data were transformed into a color-coded map showing where plants were running “fevers”. Farmers could then spot-spray, using 50 to 70 percent less pesticide than they otherwise would.
The bad news is that Paley’s company closed down in 1984, after only three years. Farmers resisted the new technology and long-term backers were hard to find. But with the renewed concern about pesticides on produce, and refinements in infrared scanning, Paley hopes to get back into operation. Agriculture experts have no doubt the technology works. “This technique can be used on 75 percent of agricultural land in the United States,” says George Oerther of Texas A&M. Ray Jackson, who recently retired from the Department of Agriculture, thinks remote infrared crop scanning could be adopted by the end of the decade. But only if Paley finds the financial backing which he failed to obtain 10 years ago.
第26题：Plants will emit an increased amount of heat when they are ________.
A) sprayed with pesticides
B) facing an infrared scanner
C) in poor physical condition
D) exposed to excessive sun rays
-
Life on land probably began about 430 million years ago, though it has existed in the water for perhaps much as 3 000 million years. When we think of the first life on land, we probably think of strange animals coming out of the oceans, but, in fact, no animals could have been living if plants had not been on land first. Plants had to be on land before animals arrived. They supplied the first land animals with the surrounding and food necessary, since the plants are the only form. of life that
is able to get and store energy.
The first plants to exist out of the water were probably certain kinds of algae (海藻) which were followed by other plants that grew close to the ground and needed water in which to reproduce. Once their move to land had been made, however, evolution (进化) took place quickly. By the end of 100 million years, plants had developed their roots (根), and some had got tree-like forms since height was very important in gaining sunlight. About 300 million years ago, much of the world was covered with forests of huge trees. In most ways they were like modern trees. They had loots, leaves, wood, but mostly they had not developed seeds.
The main idea of the first paragraph is ______.
A．life on land probably began about 430 years ago
B．the first animal on land came from oceans
C．there wouldn't be animals without plants
D．plants are the only form. of life that is able to get and store energy
-
Only five of the firm's employees are______; all the other 19 were temporary.
A．permanent
B．persistent
C．perspective
D．pessimistic
-
Botany, the study of plants, occupies a peculiar position in the history of human knowledge. For not many thousands of years it was the one field of awareness about which humans had anything more than the vaguest of insights(了解). It is impossible to know today just what our Stone Age ancestors knew about plants. But from what we can observe of pre-industrial societies that still exist, a detailed learning of plants and their properties must be extremely ancient. This is logical. Plants are the basis of the food pyramid for all living things, even for other plants. They have always been enormously important to the welfare of peoples, not only for food, but also for clothing, weapons, tools, dyes, medicines, shelter, and a great many other purposes. Tribes living today in the jungles of the Amazon recognize literally hundreds of plants and know many properties of each. To them botany, as such, has no name and is probab-ly not even recognized as a special branch of "knowledge" at all.
Unfortunately, the more industrialized we become, the farther away we move from direct contact with plants, and the less distinct our knowledge of botany grows. Yet everyone comes unconsciously on an amazing amount of botanical knowledge, and few people will fail to recognize a rose, an apple, or an orchid. When our Neolithic ancestors, living in the Middle East about 10,000 years age, discovered that certain grasses could be harvested and their seeds planted for richer yields the next season, the first great step in a new association of plants and humans was taken. Grains were discovered and from them flowed the marvel of agriculture: cultivated crops. From then on, humans would increasingly take their living from the controlled production of a few plants, rather than getting a little here and a little there from many varie-ties that grew wild and the accumulated knowledge of tens of thousands of years of experience and intimacy with plants in the wild would begin to fade away.
It is assumed in the passage that early humans ______.
A．probably had extensive knowledge of plants
B．thought there was no need to cultivate crops
C．did not enjoy the study of botany
D．placed great importance on the ownership of property
-
The boy sitting by the window is the only one of the students who （is, are) from the
The boy sitting by the window is the only one of the students who (is, are) from the countryside in our school.
-
The presentation is scheduled the day after tomorrow. There are only__ days for me to get prepared（）
A．a couple of
B．a dozen of
C．a handful of
D．a quarter of
-
The stories in the Canterbury Tales are only connected by the host of Tabard Inn.（）
此题为判断题(对，错)。
