A In the sixteenth century, an age of great marine (海运业) and terrestrial(陆地的) exploration, Ferdinand Magellan(斐迪南麦哲伦（西班牙航海家）) led the first expedition to sail around the world. As a young Portuguese noble(贵族), he served the king of Portugal, but he became involved in the quagmire(无法脱身的困境) of political intrigue(阴谋) at court(当庭) and lost the kings favor. After he was dismissed from service to the king of Portugal, he offered to serve the future Emperor Charles V of Spain.A papal decree(宗教的判决) of 1493 had assigned all land in the New World west of 50 degrees W longitude（经度） to Spain and all the land east of that line to Portugal. Magellan offered to prove that the East Indies fell under Spanish authority（权力）. On September 20, 1519, Magellan set sail from Spain with five ships. More than a year later, one of these ships was exploring the topography of South America in search of a water route（航线） across the continent. This ship sank, but the remaining four ships searched along the southern peninsula（半岛） of South America. Finally they found the passage they sought near a latitude（纬度） of 50 degrees S. Magellan named this passage（通路） the Strait of All Saints, but today we know it as the Strait of Magellan.One ship deserted（遗弃） while in this passage and returned to Spain, so fewer sailors were privileged to gaze at that first panorama（全景） of the Pacific Ocean. Those who remained crossed the meridian（子午线） we now call the International Date Line in the early spring of 1521 after ninety-eight days on the Pacific Ocean. During those long days at sea, many of Magellans men died of starvation and disease.Later Magellan became involved in an insular conflict （海民的冲突）in the Philippines and was killed in a tribal（种族的） battle. Only one ship and seventeen sailors under the command of the Basque（巴斯克人（居住在西班牙北部和法国南部） navigator（航海家） Elcano survived to complete the westward journey to Spain and thus prove once and for all that the world is round, with no precipice（悬崖） at the edge.1.The sixteenth century was an age of great _exploration.(A) cosmic(宇宙的) (B) land (C) mental (D) common man （平民） (E) none of the above2. Magellan lost the favor of the king of Portugal when he became involved in a political _.(A) entanglement（纠缠） (B) discussion (C) negotiation (D) problems (E) none of the above3. The Pope divided New World lands between Spain and Portugal according to their location on one sideorthe other of an imaginary geographical line 50 degrees west of Greenwich that extends in a _ direction.(A) north and south (B) crosswise (横向)(C) easterly (D) south east (E) north and west4. One of Magellans ships explored the _ of South America for a passage across the continent.(A) coastline （海岸线）(B) mountain range （山脉）(C) physical features （实际尺寸）(D) islands (E) none of the above5. Four of the ships sought（寻找（seek的过去式和过去分词）a passage along a southern _.(A) coast (B) inland (C) body of land with water on three sides (D) border （边界）(E) answer not available6. The passage was found near 50 degrees of _.(A) Greenwich (B) The equator (C) Spain (D) Portugal (E) MadridBThe longer food is kept, the more likely it is to attract insects. Even foods stored in containers（容器） often attract bugs. To solve this problem, scientists have been working with different odors（气味） in an attempt（试图） to find one strong enough to keep insects from going near food. One possibility would be to use plants with strong smells, like garlic or pine（松木）, to keep insects away. Unfortunately, however, using these smells might keep some people away too! A more promising repellent（有前景的防护剂） is citronella oil(香茅油), which comes from a type of lemongrass. An experiment was done using this oil with a certain（某类） insect, the red flour beetle（米虫）. Scientists sprayed（喷洒在） cardboard（纸箱） boxes with citronella oil and noticed that the beetles did not enter those boxes. They were much more interested in boxes that were not sprayed. One problem with using citronella oil as a repellent（防护剂）, however, is that it is quite ephemeral（短暂的） it simply does not last very long. After a few months it loses its smell, and bugs no longer find it unpleasant. Scientists hope to improve citronella oil so that its scent（气味） remains strong for a longer time. It will also be necessary to make sure that the oil is not harmful to people, as scientists are still not sure whether it is safe to use around food. 7. What is the passage mainly about? (A) Oils used in cooking (B) Ways of protecting food (C) The behavior of a kind of beetle (D) Smells produced by different grasses 8. The word one refers to . (A) an odor (B) an insect(C) a scientist (D) a container 9. What does the author imply about the odors of garlic and pine? (A) They last for a long time. (B) They are not always very strong. (C) They can be unpleasant to people. (D) They attract certain