Read the following article and select the best answer. Article: How much can environment affect intelligence? In one study, striking increases in IQ occurred in 25 children who were moved from an orphanage to more stimulating(,) environments.The children, who were all considered mentally retarded and unadoptable, were moved to an institution where they received personal attention from adults.Later, these supposedly retarded children were adopted by parents who gave them love, a family ,and a stimulating home environment.The children gained an average of 29 IQ points.For one child, the increase was an amazing 58 points.A second group of initially less "retarded" children, who stayed in the orphanage, lost an average of 26 IQ points. Other encouraging results can be found in early childhood education programs, which provide stimulating intellectual experiences for disadvantaged children.In one study, children from low-income families were given enriched environments from early infancy through preschool.By age 2 their IQ scores were already higher than those in a control group.More important, they were still 5 points higher seven years later.High-quality enrichment programs such as Head Start can prevent children from falling behind in school. A particularly striking environmental effect is the fact that 14 nations have shown average IQ gains of from 5 to 25 points during the last 30 years.These IQ boosts, averaging 15 points, occurred in far too short a time for genetics to explain them.It is more likely that the gains reflect environmental forces, such as improved education, nutrition, and living in a technologically complex society. Question: What's the main idea of this passage - Retarded children cannot improve their IQ's. - Orphanages are full of mentally retarded children. - Environmental factors influence a child's IQ. - Early childhood education programs are important.
Environmental factors influence a child's IQ.

Read the following article and select the best answer. Article: Last Friday, I was coming home late after spending time with friends and thought I'd go down to the $99 cent pizza place. On the way, I saw a man sitting on the stairs alone there. I'd seen him before every day I run late to work, but this time I had no place to rush off to. There was something about him, a quiet manner, different from many of other homeless people I had seen in New York City. I walked past him, went to the pizza place, and those 10 seconds waiting in line was enough to practice stepping outside of my usual, familiar flow. So with a few slices in hand, I went back to join him. I asked him if he was hungry. He said yes, but not for pizza because it made him uncomfortable. He'd rather have a few bucks for chicken and rice since it was easier on his stomach. It's funny, in that moment, he became more real to me. This man I had seen almost every day was someone with specific conditions, needs, and experiences. We exchanged names and ended up talking for a little over an hour that night as Kevin told me stories from his life, how he had done things when "he was younger and didn't know any better" and how he tried to make amends but too much time had passed. He shared his views on the value for young adults to learn the history of other people. He talked about his one wish being in his 60's before he leaves this earth, which is to share his story with the teenagers and young adults so they could avoid the mistakes he went through. Throughout the conversation, he eventually got his chicken and rice and gifted me a rose he had been carrying. Shortly afterwards, I made my way home, thinking to myself, "I met an amazing homeless person". Question: How do you like the homeless man after reading the passage? - Learned. - Honorable. - Determined. - Promising.
Honorable.

(Question)
Read the following article and select the best answer. Article: American scientists are developing an "intelligent" mobile phone capable of blocking incoming calls depending on the owner's mood. Using "context aware" technology, the "Sensay" phone will monitor calls and send back polite messages saying the user may be contacted later. A research team at the Institute for Complex Engineering Systems at Carragie Mellon University in Pittsburg, Pennsylvania, are developing body temperature and electrical skin monitors to help the device understand the emotional state of its user. If the phone senses that the user is busy -- for instance, involved in a conversation -- it might block an incoming call and turn it onto voicemail. The phone would send back a text message saying the user is unavailable, but advising that if the matter is urgent the caller can try again in three minutes. If a call from the same person came in again, the phone would put it through. The researchers are interested in four basic different states -- busy and not to be interrupted, physically active, idle, and "normal." Most people are said to change between these states, an average of 6 to 12 times a day. Professor Asim Smailagic, a leading member of the Carnegic Mellon team, told The Engineer magazine, "Today's computers are pretty dumb compared with the device. We got to work at the beginning of May and since then have been improving it. The next stage is to make it smarter, adding various intelligence systems so it can learn about the user. The phone also employs four primary sensors -- two microphones to pick up conversations and monitor local noise, a light detector and an accelerometer .The light sensor shows if the phone is being carried in a bag or pocket, while the accelerometer determines whether the user is walking, running or standing still. In the future, the sensor box, phone and personal organizer will be combined into one device." Question: According to Professor Smailagic, the detector will show _ . - where the mobile phone is - where the mobile phone user is - whether the mobile phone user is busy - whether the mobile phone is within reach
(Answer)
whether the mobile phone user is busy