Read the following article and answer the question. Article: For many men, the idea that they have a better sense of direction than women has been improved by a scientific study. Researchers from Norway scanned on the brains of volunteers as they completed navigation tasks to discover men are more skillful at finding their way because they use a separate part of their brain. According to lead researcher Dr. Cal Pintzka from the Norwegian University of Science and Technology (NTNU), men and women have different navigational strategies. Med use basic directions--the use of north, south, east and west--during navigation to a greater degree. Men's sense of direction was more effective. They quite simply got to their destination faster. "If they're going to the Students Society building in Trodheim, for example, men usually go into the general direction where it is located." Dr. Pintzka explained. Women usually orient themselves along a route to get there, for example, go past the hairdresser and then up the street and turn right after the shore. The study shows that using the basic directions is more efficient because it is a more flexible strategy. The destination can be reached faster because the strategy depends less on where you start. Meanwhile, the study also shows both men and women use large areas of the brain when they navigate, but some areas were different. The man used the hippocampus more, whereas women use their frontal areas to a greater extent. That degrees with the fact that the hippocampus is necessary to make use of basic directions. Losing one's sense of direction is one of the first symptoms in Alzheimer's disease. Understanding how men and women use different brain areas and strategies to navigate, researchers will be able to enhance the understand of the disease's development, and develop coping strategies for those already affected. Question: How are men different from women in navigation? Answer:
OPTIONS:
- They use a separate part of their brain.
- They deal with navigation in complex ways.
- They make different actions to the road signs.
- They form different images of road conditions.
They use a separate part of their brain.

Read the following article and answer the question. Article: The vast jungles of the Amazon rainforest are home to tribes mostly isolated from the outside world, whose way of life, largely unchanged for hundreds of years, is now increasingly threatened by modern civilization. Now, scientists discover they can monitor these "uncontacted tribes" using satellites, which would allow inexpensive and safe tracking of these tribes in order to protect them from outside threats. In order to help preserve these uncontacted Indians, researchers need accurate estimates of their populations. One way to collect this data involves flying over their villages, but such over-flights are both expensive and could fill these native peoples with fear. Another strategy involves meeting individuals on the ground, but among other risks, scientists could accidentally spread disease to members of the tribes. Instead, scientists investigated whether satellite images could monitor uncontacted tribes. The result was inspiring. They confirmed their locations and measured the sizes of their village, houses and gardens. "We can find isolated villages with remote sensing and study them over time." Walker told Live Science. "We can ask: Are they growing? Do they move?" Surprisingly, based on the sizes of the houses and villages, the scientists find the population densities of these isolated villages are about 10 times greater, on average, than other villages of native Brazilian peoples. This may be due to the fact that they have to live closer together because they are not as good at clearing the forest, since they lack modern devices like chainsaws and tractors, the researchers said. The tribes may also be afraid of spreading out due to fear of being attacked by outsiders, Walker said. The researchers now plan to focus on 29 more isolated villages to "look at their ecology-- that is, distance from rivers and roads--and use this to model where else we can find more isolated villages," Walker said. Question: Scientists don't want to meet the Indians on the ground due to the fear that _ . Answer:
OPTIONS:
- they can't get accurate data
- they could pass disease to the Indians
- they will be attacked by the Indians
- they will catch disease from the Indians

Answer: they could pass disease to the Indians

Question: Read the following article and answer the question. Article: Statistically, air travel is by far the safest way to travel, and you can make flying even safer, just by following these simple rules. As your chances of being involved in an air accident are practically nil , many of these tips concern what you should and shouldn't do to make your journey safer when you are airborne . Fly on non-stop routes Most accidents occur during the takeoff, climb, descent and landing phases of a flight, so flying non-stop reduces your exposure to these complex procedures. Choose larger aircraft. w.w.w.k.s.5.u.c.o.m Although small aircrafts have very good safety records, _ with more than 30 passenger seats are designed to comply with much stricter regulations and are tested more regularly to make sure they still comply. Also, in the unlikely event of a serious accident, larger aircraft provide a better opportunity for passenger survival. Pay attention to the pre-flight safety briefing The information may seem repetitious , but it's worth listening to the flight attendants. And even if you've flown before, it doesn't mean you know everything about the aircraft you're on, such as the location of the closest emergency exit. Store things safely Never put very heavy articles in the overhead storage bins. They may fall out when someone opens the bin and cause injury. Also, the bin may not be able to hold heavier objects during turbulence . Keep our seat belt fastened while you are seated Cabin crew always tell you this, but it's important. You would be seriously injured if the plane hits unexpected turbulence. Always fasten your seat belt if you are told to. _ of flying is this: If you are told to do something, do it first and ask questions later. Let the flight attendant pour your hot drinks Flight attendants are trained to handle hot drinks like coffee or tea in a crowded aisle on a moving aircraft, so allow them to pour the drink and hand it to you. Never ask to take a coffee pot from one of them. Question: The best title of the passage should be _ . Answer:
OPTIONS:
- The Safest Way to Travel
- Air Safety Tips
- Non-stop Routes
- How to Fly a Plane
Answer: Air Safety Tips

Read the following article and answer the question. Article: South Africa hosted the fifth BRICS Summit in March 2013,which completed the first cycle of BRICS summits,BRICS is an acronym for the powerful grouping of the world's leading up-and-coming economies,namely Brazil,Russia,India,China and South Africa.The BRICS aims to achieve peace,security,development and cooperation.It also seeks to contribute to the development of humanity and build a more stable and fairer world. The industry leaders from the business communities of the five countries agreed that the BRICS countries will actively support industrialization on the African continent in order to contribute significantly to its development and to expand trade links between Africa and BRICS.The global economic situation,though improving,continues to remain uncertain with the Euro-crisis a major concern.The task ahead is to build on these developments and BRICS countries remain committed to the cause of promoting sustainable growth.Greater economic cooperation among BRICS countries can be significantly important,which will prove beneficial for global economic growth. According to Dr.Rob Davies,South African Minister of Trade and Industry,the African continent is recognized as the second fastest growing continent after Asia.There are four drivers of the economic growth in African continent.These are the boom in mineral products in the African continent,the development of the service industries,the benefit of not having the financial crisis,and infrastructure development.Davies also adds that other BRICS countries have advantage of large populations providing big home markets for their products.The South African population is small compared to other BRICS countries,but if you add up numbers on continent then you have a critical mass that can support the new industrial wave in Africa:That is why the South African needs to create large trading blocks across large parts of African continent. Question: Which of the following is the driver of the economic growth in Africa? _ . Answer:
OPTIONS:
- The development of business industry
- Protective exploration in mineral products
- The recovery of the infrastructure
- The benefits of having no financial crisis
The benefits of having no financial crisis