Read the article and select the best answer. Article: One baby born with a defective windpipe now has hope of breathing normally thanks to 3-D printing technology, NPR reported. Garrett Peterson, now 18 months old, was born with tracheomalacia , leaving him unable to breathe. The condition terrified his parents, who turned to specialist Dr. Glenn Green at the University of Michigan for a possible treatment. Along with Scott Hollister, a biomedical engineer who runs the university's 3-D printing lab, Green designed a device that can hold open Garrett's windpipe until it's strong enough to function independently. After taking a CT scan of Garrett's windpipe to make a replica of it, they made the "splint" with a 3-D printer. "It's like a protective shell that goes on the outside of the windpipe, and it allows the windpipe to be tacked to the inside of that shell to open it up directly," Green told NPR. On January 31, Garrett had his surgery. Surgeon Dr. Richard Ohye opened up Garrett's chest and saw that his windpipe had completely collapsed and one of his lungs was completely white -- a condition Ohye had only seen in dead bodies. After eight hours of surgery and careful placement of a splint on either side of Garrett's windpipe, it was time for the big test: What would happen when they let air flow through the windpipe into Garrett's lungs? Though he still remains in the hospital, Garrett has gotten stronger and needs less assistance breathing in the weeks since his surgery. His parents are overjoyed, saying he's starting to act more interactive and alert. As Garrett grows, the splint will expand and eventually dissolve in his body as his own windpipe strengthens enough to work independently. 3-D printing technology has allowed doctors to help patients in ways that they hope will continue to grow. "We're talking about taking something like dust and converting it into body parts," Green said. "And we're able to do things that were never possible before." Question: According to the passage, doctors' attitude toward 3-D printing technology in medical care is _ . Options: A: positive B: negative C: unknown D: indifferent
A

Read the article and select the best answer. Article: Britain is a popular tourist place. But tours of the country have pros and cons. Good news Free museums. No charge for outstanding collections of art and antiquities. Pop music. Britain is the only country to match the US on this score. Black cabs. London taxi drivers know where they are going even if there are never enough of them at weekends or night. Choice of food. Visitors can find everything from Ethiopian to Swedish restaurants. Bad news Poor service. "It's part of the image of the place. People can dine out on the rudeness they have experienced," says Professor Tony Seaton, of London University's International Tourism Research Center. Poor public transport: Trains and buses are promised to defeat the keenest tourists, although the over-crowded London tube is inexplicably popular Lack of languages. Speaking slowly and clearly may not get many foreign visitors very far, even in the tourist traps . Rain. Still in the number one complaint . No air-conditioning. So that even splendidly hot summers become as unbearable as the downpours. Overpriced hotels. The only European country with a higher rate of tax on hotel rooms is Denmark. Question: What do tourists complain most? Options: A: Poor service. B: Poor public transport. C: Rain. D: Overpriced hotels.
C

(Question)
Read the article and select the best answer. Article: Many presidents have exhibited senses of humor throughout our nation's history. None, however, is any better known for his humour than Lincoln. No matter the situation, it always reminded him of a story, and more often than not, the story was amusing. It seemed that his passion for humor appeared early in life and his humor never seemed to fade, even under the most difficult situations. Following are some favorite Lincoln stories. All are fun to read. Abe Needs His Hair Combed President Lincoln had the ability to laugh at himself and he greatly enjoyed telling stories in which he was the object of the joke. He especially liked this one: when I was nominated at Chicago, I had never before sat for a photograph. One fellow thought that many people might like to see what I looked like, so he immediately bought the camera and began selling photographs of me all over the country. I happened to be in Springfield when I heard a boy selling them on the streets. "Here's your likeness of "Abe" Lincoln!",he shouted to Lincoln. "Only two shillifigs!He'll look a lot better once he gets his hair combed!" Nobody Ever Died in Here! A man was complaining to the President that a friend of his had been driven away from New Orleans because he was a Union supporter. When the man asked to see the paper by which he was driven away, he was simply told that the Confederate Government would do nothing illegal, and so they had issued no papers. They were simply hoping to make him go on his own free will. Naturally, that reminded Lincoln of a story, and he remarked that he had known of a hotel keeper in St. Louis who boasted that nobody ever died in his hotel. "Of course," Lincoln said with a twinkle in his eye, "anytime a guest appeared to be in danger of dying he was carried out to die outside." Let the Elephant Run Assistant Secretary of War Charles A. Dana had learned that a man named Jacob Thompson, who had been causing the government many problems, was about to escape to Liverpool. Dana approached Lincoln with the... Question: In the second story, Lincoln compared the hotel keeper to _ Options: A: his friend B: the President C: the Union supporter D: the Confederate Government
(Answer)
D