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Indigenous plant and animals are few in Easter Island. At the time of European arrival, the toromiro tree was the only wild tree and the Carolina wolfberry the only wild shrub, the vegetation being (1) ____ herbaceous. The taromira tree was overexploited by the island wood carvers, and the last local specimen died in the 1950s (2) ____, the species was saved from extinction. The Norwegian Archaeological Expedition collected seeds and planted them in the Gothenburg Botanical Garden, and saplings from the garden were reintroduced to Easter Island in 1988. Today only 31 wild flowering plants, 14 ferns, and 14 mosses are reported. Grass and small ferns dominate the barren landscape, (3) ____ the boggy crater lakes are thickly covered by two imported American species, the totora reed and Polygonum acumination. A number of cultivated species of plant were also introduced partly from America and partly from Polynesia before the arrival of Europeans; of these the (4) ____ species was the sweet potato, which was the cultivated in extensive plantations and formed the staple diet. Bottle gourds, sugarcane, bananas, taro, yams, and two trees. (i.e., the Asiatic paper mulberry- and the American Triumfetta semitriloba) were of aboriginal importation, as also probably were the husk-tomato, small variety of pineapple, and the coconut.
(1) ____
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Humour is worth in these four facets, except ____.
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Although gluten has gained a bad reputation, the majority of people would struggle to explain what it actually is. The truth is that gluten is just a mixture of proteins found in the seeds of certain cereal plants: wheat, rye and barley. Gluten is stored in a tissue inside the seed called the endosperm, which surrounds the plant embryo and provides a dense source of energy as the plant starts to grow. In wheat, gluten is formed when the proteins glutenin and gliadin cross-link into a net-like structure that provides elasticity (stretchiness) and viscosity (thickness).
Once food reaches the stomach it must be broken down by enzymes in the process of digestion. Large proteins are broken up into chains of amino acids called peptides. Normally these peptides are easily broken down further; however, the gliadin peptides in gluten are difficult to break down as they are part of a group of peptides called prolamins. Prolamins are made up of lots of glutamine and proline amino acids, which digestive enzymes have difficulty breaking up. This means that unlike most proteins gluten digestion can leave strands of amino acids intact in the small intestine. These strands can be up to 10 amino acids long and are known as oligopeptides. For most people gliadin oligopeptides are harmless. However, a small proportion ofthe population will produce an immune response known as coeliac disease, a condition caused by the body'simmune systems mistakenly attacking itself. Coeliac disease is caused by a reputation to gluten.
What is the author's purpose in writing this passage?
2
5.0
(3) ....
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What does the passage mainly deal with?
(SOAL SBMPTN 2018)
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Which of the following titles would be most appropriate for the passage?
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What is the topic of the text?
(SOAL UM UGM 2017)
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Which of the following best describes the organization of the text?
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The author of the passage is primarily concerned with which of the following?
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The primary purpose of the passage is to ....
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