Ques: Read the following article and select the best answer. Article: Now let's look ourselves as a species in relation to ecosystem balance.Modern scientists believe that humankind, like other animals, evolved through millions of years of changes and adaptations to the environment and that our most direct evolutionary ancestor was probably an earlier species of the primate(monkey, ape) group. Despite this similarity with other creatures, however, the evolution of humankind differs from that of other species in one important and unique way. In other species, evolution has led to specialization, both in the species abilities and in its place within the environmental structure. For example, the giraffe is much adapted to feeding on treetops, but it is also specialized and thus limited to feeding on trees and shrubs. Only with great difficulty can it bend down to graze on the ground. Similarly, the anteater is extremely well adapted to eating ants but is unable to catch or eat other animals. The same is true for countless other species. For humankind it is opposite. Our evolution had led to a very generalized ability. Our highly developed intelligence and ability to make and handle tools mean that we can do almost anything. Humans evolved in such a way that we are able to move into every environment on Earth and even into space. No natural competitor offers great resistance, and other natural enemies such as disease have been controlled. Said another way, we see in humankind a great imbalance between biological potential and environmental resistance. The result is the rapidly increasing world population, frequently referred to as the population explosion. Further, to support our growing population, natural ecosystems are being increasingly displaced by human habitations, agriculture, and other human supporting activities. Question: According to the author, imbalance between biological potential and environ mental resistance has resulted in _ . - the population explosion - the destruction of human habitations - the growth of natural ecosystem - the specialization of humans
Ans: the population explosion

Ques: Read the following article and select the best answer. Article: When nature is left alone, a balance is reached among the animals and plants living in one area. But when man starts his work in nature, the balance is likely to be destroyed. He grows a crop and takes it away to eat; then there are no dead leaves to fall on the ground, holding water while it sinks into the surface, or decaying and adding humus to the soil. Unless a farmer acts with knowledge and skill, he is therefore most likely to make the land poorer. To take the place of the useful matter in the crops that he removes, he uses some kind of fertilizer. Chemical fertilizers are of great help, but the waste products of animals and decaying remains of plants should also be put on the land. In some places, it is a habit to burn waste material lying about, but such burning destroys the useful matter in the dead plants. Although the ashes that are left are valuable when put on the land, a better practice is to bury the waste so that it decays and increases the humus in the soil. In the past, when the world population was much lower than it is now, a man had little difficulty in ordinary times in growing the food that was needed. When a field had been used some years and had become tired, the farmer could move to another place. The tired land then slowly recovered. Gradually grasses and other plants would appear on it and its productive power would slowly return to normal through their decay. But nature, left alone, would take a long time to bring back the land to its former state; the length of time required would depend on local conditions, but it might well be ten years. It is a bad practice to grow the same crop in a field year after year. If the crop is changed, the land will suffer less because it is treated and used in a different way. Different plants have different effects on the soil. Therefore, a change of crop will do less harm than the growing of the same crop year after year and a regular change to grass will do good to the soil. Much will therefore be gained if different crops are grown one... Question: According to the passage, the land will become poorer, _ . - if all the dead leaves are cleared away - if the humus is increased after the harvest - if dead leaves decay in the soil by themselves - if waste plant material lying about is buried
Ans: if all the dead leaves are cleared away

Ques: Read the following article and select the best answer. Article: Ad No.90374 Posted July 12, 2015 by Amanda Expire Date August 12, 2015 Tag:Beijing Language Teaching Part Time We are looking for Teachers, whose Native Language is English, willing to teach in China. Mostly schools are in South of China. The Benefit package for ESL Teachers includes: One-year Contract:1st September 2015 to 1st August 2016 Salary 4,000 RMB to 5,000 RMB/Month Teaching load & schedule:20 teaching hours per week A rent-free, fully furnished apartment with a living room, bedroom, kitchen and bathroom Kitchen facilities provided, other electric appliances will be supplied, water, heater, microwave etc.[:ZXXK] If you are interested, please read the information above and kindly send your application to attach the following documents (in doc or JPEG format).The subject to be mentioned, as "teach in China" 1).CV/Resume 2).A copy of academic degree/diploma/certificate/or college transcript 3).A photocopy of the data page of valid passport 4).A recent color photo 5).A letter of recommendation or release letter from your previous Chinese school (Only if you worked in China previously) 6).Any other relevant information that you think might help your application Question: If you are employed, you will _ . - work full time - not have to pay the apartment rent - prepare furniture yourself - work four months for two years
Ans: not have to pay the apartment rent

Ques: Read the following article and select the best answer. Article: You are the collector in the gallery of your life. You collect. You might not mean to but you do. One out of three people collects tangible things such as cats, photos and noisy toys. There are among some 40 collections that are being shown at "The Museum Of"--the first of several new museums which, over the next two years, will exhibit the objects accumulated by unknown collectors. In doing so, they will promote a popular culture of museums, not what museums normally represent. Some of the collections are fairly common--records, model houses. Others are strangely beautiful--branches that have fallen from tree, for example. But they all reveal a lot of things: ask someone what they collect and their answers will tell you who they are. Other on the way include "The museum of Collectors" and "The Museum of Me."These new ones, it is hoped, will build on the success of "The Museum Of." The thinkers behind the project want to explore why people collect, and what it means to do so. They hope that visitors who may not have considered themselves collectors will begin to see they, too, collect. Some collectors say they started or stopped making collections at important point: the beginning or end of adolescence--"it's a growing-up thing; you stop when you grow up,"says one. Other painful times are mentioned, such as the end of a relationship. For time and life can seem so uncontrollable that a steady serial arrangement is comforting. Question: What can be learned about collectors from their collections? - Who they are. - How old they are. - Where they were born. - Why they might not mean to collect.
Ans:
Who they are.