*Question*
Two of the saddest words in the English language are "if only". I live my life with the goal of never having to say those words, because they convey regret, lost opportunities, mistakes, and disappointment. My father is famous in our family for saying, "Take the extra minute to do it right." I always try to live by the "extra minute" rule. When my children were young and likely to cause accidents, I always thought about what I could do to avoid an "if only" moment, whether it was something minor like moving a cup full of hot coffee away from the edge of a counter, or something that required a little more work such as taping padding   onto the sharp corners of a glass coffee table. I don't only avoid those "if only" moments when it comes to safety. It's equally important to avoid "if only" in our personal relationships. We all know people who lost a loved one and regretted that they had _ an opportunity to say "I love you" or "I forgive you." When my father announced he was going to the eye doctor across from my office on Good Friday, I told him that it was a holiday for my company and I wouldn't be here. But then I thought about the fact that he's 84 years old and I realized that I shouldn't give up an opportunity to see him. I called him and told him I had decided to go to work on my day off after all. I know there will still be occasions when I have to say "if only" about something, but my life is definitely better because of my policy of doing everything possible to avoid that eventuality. And even though it takes an extra minute to do something right, or it occasionally takes an hour or two in my busy schedule to make a personal connection, I know that I'm doing the right thing. I'm buying myself peace of mind and that's the best kind of insurance for my emotional well-being. W hat is the best title for the passage? A) The Emotional Well-being B) The Two Saddest Words C) The Most Useful Rule D) The Peace of Mind
**Answer**
B

*Question*
In a unique research cooperation between Stratasys, Education, R&D departments and MIT's Self-Assembly Lab, a new process is being developed, known as 4D Printing. The 4D printing concept, which allows materials to "self-assemble  " into 3D structures, was initially proposed by Massachusetts Institute of Technology faculty member Skylar Tibbits. Tibbits and his team combined a strand   of plastic with a layer made out of "smart" material that could self-assemble in water. They advanced this concept by creating materials that can change into several different complicated shapes, though this kind of material remains the bottleneck of 4D technology. To many people that are just starting to get used to the idea of 3D printers, the name 4D is causing confusion because they cannot understand where this fourth "dimension" coming from. 4D technology shares many of the same principles of 3D printing and is essentially still about creating a new, 3D structure out of certain component; however, Tibbits states the fourth dimension at work here comes from concept of the fourth dimension of time. The difference between these 3D and 4D creations is that these new forms have the ability to transform and adapt over time. 4D printing works through self-assembly -- a system where "disordered elements form an "ordered" structure via an interaction. With these 4D printed materials, these disordered materials are strands or sheets of specially designed materials. Environmental changes then stimulate  a response from them so that they form a preprogrammed shape. The idea of having adaptable technology that only relies on energy and non-human interactions raises some interesting questions about where 4D printing can be used and the practical applications in dangerous environments. This could mean improved infrastructures in extreme conditions, leading to a reduced need for workers to put themselves at risk, but the potential goes even further than that. The technology promises exciting new possibilities for a variety of... The major problem concerning the development of 4D printing lies in   _  . A) producing essential 4D printers B) creating proper smart materials C) providing a suitable environment D) promoting practical applications
**Answer**
B

*Question*
A victor is, by definition, someone who wins a struggle or contest. However, that doesn't mean he or she will live a proud and happy life ever after, as Katniss Everdeen is about to discover in The Hunger Games: Catching Fire. Catching Fire, out in Chinese theaters on Nov 21, is set in a futuristic society called Panem. Every year its government holds a televised fight to the death. Two teenagers from each of the 12 districts of Panem are chosen to compete. In the new film, last year's victors Katniss (Jennifer Lawrence) and her partner Peeta are back home after winning the 74thHunger Games. Katniss just wants to live a normal life. However, that never seems to happen. She has nightmares, which remind her that she is a killer. Her worst nightmare comes true when the annual Hunger Games arrive again. The teenager finds herself back in the competition along with Peeta. Since Katniss brings hope to Panem through her courage, President Snow plans to use this year's Games to kill off Katniss and Peeta and in turn _ the fires of rebellion. "This is the next step of Katniss' heroism and the next part of her journey to finding out who she is really going to be," Lawrence told Reuters. Fast-paced and full of action, Catching Fire looks to outdo the success that the first film had in 2012. With a 97 percent rating on the movie review website Rotten Tomatoes, it is enjoying positive reviews. Critics have praised it for being faithful to the book written by American author Suzanne Collins. The Hollywood Reporter said that Catching Fire outshines the first movie a lot. Jennifer Lawrence, who won a best actress Oscar this year for her 2012 movie Silver Linings Playbook, has helped Catching Fire find success, Forbes pointed out. The 23-year-old actress does well playing a young lady who hates what she was forced to do to stay alive yet is determined not to give up. "Lawrence's down-to-earth personality in real life won the hearts of the public. So given a wildly popular first film that blew everyone away, a rising fan base... Which of the following is TRUE about the film's story according to the article? A) Every year 12 teenagers in total are chosen to join in the televised fight. B) Despite having won the 74 thHunger Games, Katniss doesn't feel much joy. C) Katniss and Peeta are chosen once again to make the TV show more appealing. D) Jennifer Lawrence won a best actress Oscar this year for the first Hunger Games movie.
**Answer**

B