Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word for each of the blanks.
One of the hottest topics on the international development agenda is how to harness the power of International Monetary Fund for the benefit of developing countries. What is sometimes called “the death of distance” brought about by the (41) _______ , allows professional services such as (42) _______ education and training to be provided easily and quickly to (43) _______ areas. Some of the gains can be seen in countries as diverse as India and Morocco, where innovations range from (44) _______ government announcements to local craftsmen selling their wares to a (45) _______ market. But already a huge and expanding (46) _______ divide is opening up between developed and developing nations. The major task facing world leaders at present is to (47) _______ everybody on the planet with clean water, basic education and the drugs needed to fight preventable diseases. Installing a (48) _______ in every classroom and linking us all to (49)_______ must be a lesser (50) , for the time being at least.
Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions.
Social parasitism involves one species relying on another to raise its young. Among vertebrates, the best known social parasites are such birds as cuckoos and cowbirds; the female lay eggs in a nest belonging to another species and leaves it for the host to rear.
The dulotic species of ants, however, are the supreme social parasites. Consider, for example, the unusual behavior of ants belonging to the genus Polyergus. All species of this ant have lost the ability to care for themselves. The workers do not forage for food, feed their brood or queen, or even clean their own nest. To compensate for these deficits, Polyergus has become specialized at obtaining workers from the related genus Formica to do these chores.
In a raid, several thousand Polyergus workers will travel up to 500 feet in search of a Formica nest, penetrate it, drive off the queen and her workers, capture the pupal brood. and transport it back to their nest. The captured brood is then reared by the resident Formica workers until the developing pupae emerge to add to the Formica food and give it to colony members of both species. They also remove wastes and excavate new chambers as the population increases.
The true extent of the Polyergus ants’ dependence on the Formica becomes apparent when the worker population grows too large for the existing nest. Formica scouts locate a new nesting site, return to the mixed-species colony, and recruit additional Formica nest mates. During a period that may last seven days, the Formica workers carry to the new nest all the Polyergus egas, larvae, and pupae, every Polyergus adult, and even the Polyergus queen.
Of the approximately 8,000 species of ants in the vvorld, all 5 species of Polyergus and some 200 species in other genera have evolved some degree of parasitic relationship with other ants.
Notes:
- parasite (n): an animal or plant that lives on or in another animal or plant of a different type and feeds from it (động thực vật kí sinh).
- parasitism (n): a type of non-mutual relationship between organisms of different species where one organism, the parasite, benefits at the expense of the other, the host (sự kí sinh).
- vertebrate (n): an animal that has a spine (động vật có xương sống).
- dulotic (adj): of or about a practice of some ants, in which one species forces members of a different species to do the work of the colony
- genus (n - plural genera): a group of animals or plants, more closely related than a family, but less similar than a species (giống, loại).
- brood (n): a group of young animals all born at the same time (lứa, đoàn. bầy).
- pupal (adj): of or about an insect in the stage of development which happens before it is completely developed (thuộc con nhộng).
Read the following passage and mark the letter A, B, C, or D on your anstver sheet to indicate the correct answer to each of the questions.
Are organically grown foods the best food choices? The advantages claimed for such foods over conventionally grown and marketed food products are now being debated. Advocates of organic foods - a term whose meaning varies greatly - frequently proclaim that such products are safer and more nutritious than others.
The growing interest of consumers in the safety and nutritional quality of the typical North American diet is a welcome development. However, much of this interest has been sparked by sweeping claims that the food supply is unsafe or inadequate in meeting nutritional needs. Although most of these claims are not supported by scientific evidence, the preponderance of written material advancing. As a result, claims that eating a diet consisting of entirely organically grown foods prevents or cures disease provides other benefits to health have become widely publicized and formed the basis for folklore.
Almost daily, the public is besieged by claims for “no-aging” diets, new vitamins, and other wonder foods. There are numerous unsubstantiated reports that natural to unfertilized eggs, that untreated grains are better than fumigated grains, and the like.
One thing that most organically grown food products seem to have in common is that they cost more than conventionally grown foods. But in many cases, consumers misled if they believe organic foods can maintain health and provide better nutritional quality than conventionally grown foods. So there is real cause tor concern if consumers particularly those with limited incomes, distrust the regular food supply and buy only expensive organic foods instead.