Rubber gloves are packed ________ cartons ________ 100 pairs each. A. in, of B. of, for C. with, of D. to, for
A.in,of
B.of,for
C.with, of
D.to ,for
- · 有4位网友选择 A,占比44.44%
- · 有2位网友选择 C,占比22.22%
- · 有2位网友选择 D,占比22.22%
- · 有1位网友选择 B,占比11.11%
A.in,of
B.of,for
C.with, of
D.to ,for
A.disposable
B.discharged
C.disinterested
D.disinteresting
A.Wear rubber gloves and boots
B.Use only approved non-conducting tools
C.Ground the case of the machine before beginning any repairs
D.Open the supply circuits and tag the switches
Take medicine, for example. Fewer than one percent of tropical forest plants have been examined for their chemical compounds. Nonetheless, scientists have integrated a wealth of important plants into our everyday lives. The West African calabar bean is used to treat glaucoma, while the sankerfoot plant of India yields reserpine, essential for treating hypertension. A West African vine provides the basis for strophanthus, a heart medicine. Quinine, an alkaloid derived from boiling the bark of the cinchona tree, is used to prevent and treat malaria. Derivatives from the rosy periwinkle offer a 99 percent chance of remission for victims of lymphocytic leukemia, as well as a 59 percent chance of recovery from Hodgkin's disease. In fact, of the 3,000 plant species in the world known to contain anti-cancer properties, 2,100 are from the tropical rain forest. Then there is robber. For many uses, only natural rubber from trees will do, synthetics am not good enough. Today, over half of the world's commercial rubber is produced in Malaysia and Indonesia, while the Amazon's rubber industry produces much of the world's four million tons. Adding ammonia to rubber produces latex which is used for surgical gloves, balloons, adhesives, and foam robber. Latex, plus a weak mixture of acid results in sheet rubber used for footwear and many sporting goods, laterally thousands of tropical plants are valuable for their industrial uses. Many provide fiber and canes for furniture, soundproofing and insulation. Palm oil, a product of the tropics, brings to your table margarine, cooking oil, bakery products, and candles. Palm nut oil, from the seed kernel in side the fruit, is found in soap, candles, and mayonnaise. The sap from Amazonian copaiba trees, poured straight into a fuel tank, can power a truck. At present, 20 percent of Brazil's diesel fuel comes from this tree. An expanded use of this might reduce our dependency on irreplaceable fossil fuels.
Many scientists assert that deforestation contributes to the greenhouse effect, the heating of the earth from increased carbon dioxide in the atmosphere. As we destroy forests, we lose their ability to convert carbon dioxide into oxygen. Carbon dioxide levels could double within the next half-century, warming the earth by as much as 4.5 degrees. The result? A partial melt-down of the polar ice caps, raising sea levels as much as 24 feet. A rise of 15 feet would threaten anyone living within 35 miles of the coast. Farfetched? Perhaps, but scientists warn that by the time we realize the severe effects of tropical deforestation, it will be 20 years too late. Can tropical deforestation affect our everyday lives? We only have to look at the catalogued tropical forests and the abundance of wondrous products from which we benefit every day to know the answer. After all, the next discovery could be a cure for cancer or the common cold, or the answer to feeding the hungry, or fuelling our world for centuries to come.
According to the information contained in the article, tropical deforestation ______.
A.will continue relentlessly and cannot be prevented
B.may have critical consequences for the survival of mankind
C.is not a really serious problem and reports have been widely exaggerated
D.is necessary for the economic development of non-industrialized countries
Take medicine, for example. Less than one percent of tropical forest plants have been examined for their chemical compounds. Nonetheless, scientists have integrated a wealth of important plants into our everyday lives. The West African calabar bean is used to treat glaucoma, while the sankerfoot plant of India yields reserpine, essential for treating hypertension. A West African vine provides the basis for strophanthus, a heart medicine. Quinine, an alkaloid derived from boiling the bark of the cinchona tree, is used to prevent and treat malaria. Derivatives from the rosy periwinkle offer a 99 percent chance of remission for victims of lymphocytic leukemia, as well as a 59 percent chance of recovery from Hodgkin's disease. In fact, of the 3, 000 plant species in the world known to contain anti-cancer properties, 2, 100 are from the tropical rain forest. Then there is rubber. For many uses, only natural rubber from trees will do, synthetics are not good enough. Today, over half of the world's commercial rubber is produced in Malaysia and Indonesia, while the Amazon's rubber industry produces much of the world's four million tons. Adding ammonia to rubber produces latex which is used for surgical gloves, balloons, adhesives, and foam rubber. Latex, plus a weak mixture of acid results in sheet rubber used for footwear and many sporting goods. Literally thousands of tropical plants are valuable for their industrial uses. Many provide fiber and canes for furniture, soundproofing and insulation. Palm oil, a product of the tropics, brings to your table margarine, cooking oil, bakery products, and candles. Palm nut oil, from the seed kernel inside the fruit, is found in soap, candles, and mayonnaise. The sap from Amazonian copaiba trees, poured straight into a fuel tank, can power a truck. At present, 20 percent of Brazil's diesel fuel comes from this tree. An expanded use of this might reduce our dependency on irreplaceable fossil fuels.
Many scientists assert that deforestation contributes to the greenhouse effect, the heating of the earth from increased carbon dioxide in the atmosphere. As we destroy forests, we lose their ability to convert carbon dioxide into oxygen. Carbon dioxide levels could double within the next half-century, warming the earth by as much as 4. 5 degrees. The result? A partial meltdown of the polar ice caps, raising sea levels as much as 24 feet. A rise of 15 feet would threaten anyone living within 35 miles of the coast. Far-fetched? Perhaps, but scientists warn that by the time we realize the severe effects of tropical deforestation, it will be 20 years too late. Can tropical deforestation affect our everyday lives? We only have to look at the catalogued tropical forests and the abundance of wondrous products from which we benefit every day to know the answer. After all, the next discovery could be a cure for cancer or the common cold, or the answer to feeding the hungry, or fuelling our world for centuries to come.
According to the information contained in the article, tropical deforestation ______.
A.will continue relentlessly and cannot be prevented
B.may have critical consequences for the survival of mankind
C.is not a really serious problem and reports have been widely exaggerated
D.is necessary for the economic development of non-industrialized countries
Her shoes go with her gloves; they look very well together.
A.suit
B.match
C.fit
D.compete
Even though leather gloves are much more expensive, they are more ______ than vinyl.
A.resistant
B.persistent
C.permanent
D.durable
Employees______food are required to wear hygienic gloves at all times.
A.feeling
B.gripping
C.handling
D.operating
What did the handball player do when he was not allowed a time out to change his gloves?
A.He refused to continue the game.
B.He angrily hit the referee with a ball.
C.He claimed that the referee was unfair.
D.He wet his gloves by rubbing them across his Tshirt.
A.spreading
B.extending
C.squeezing
D.stretching
为了保护您的账号安全,请在“简答题”公众号进行验证,点击“官网服务”-“账号验证”后输入验证码“”完成验证,验证成功后方可继续查看答案!