用下列词语造句

①感觉

②相连

阅读下面短文，从方框中所给的A—D四个选项中选择正确的答案，并将其序号填入（1）~（4）题，使短文意思连贯，然后回答最后一小问。

    Tuesday was like any other day for Morgan Bieley, 15. It was the fourth period, and she was the first student to arrive in the gym for her P.E. class. （1）____.

    "There was a sharp cracking noise and then a loud boom. After that, I didn't remember anything,"said Morgan.

    The roof（屋顶）of the gym had fallen down under the heavy snow. Morgan couldn't get away. "I woke up and there was a big piece of wood on my leg. （2）____. I was starting to get cold."

    Luckily, help was nearby. A new program using "rescue（救援）robots" was tried for the first time.

    "We were nervous about using the robot,"said Derric Sneed, the leader of the program. "But in the end the robot gave us exact information.（3） ____."

    The robot was able to go into the gym and find Morgan's place. "Once we made sure where Morgan was and knew it was safe, our men went into rescue her,"says Sneed. "Her leg was broken and she was scared, but thankfully, she was alive."

    Doctors say that Morgan is doing well. （4）____. "I want to meet my hero after I get out of the hospital," laughs Morgan. "That little robot saved my life!"

Who does Morgan think her hero is?（回答不多于3个单词）

____

    A company says it has completed the first 3D-printed home recently. The home was shown to reporters and visitors at a music festival.

    The building company has developed large 3D- printers that build homes with mortar, a hard and strong material. It uses robotics, computer programs and advanced materials to make houses.

    Jason Ballard is the company's chief engineer. "So I'm standing in front of the first 3D-printed home in America. This house was actually printed in high winds, blowing dust and rain." It is important for the printing programmes to operate in bad weather conditions, such as weather disasters. The goal is to print homes in developing countries. So the printer has to be light enough to move from one property to the next.

    Ballard imagines that someday, many 3D-printers will operate around the world to make homes. "It's actually a lot more simple to build a printer than it is to build a house," he said. "We ran this printer at about a quarter speed to print this house, and completed it in about 48 hours of print time."

    The company developed this technology not to make money but to help provide a quick, cheap housing solution for the millions of people who need it most. There are about a billion people that don't have one of life's most basic human needs, and that's safe shelter.

    Ballard says his company already works on housing needs with poor families in different areas. But he says that to really make a difference, the program will need to be greatly improved. He added that since the 3D-printing process is so much faster than traditional homebuilding, a whole community could be built in just a few months. He believes over time, people can get the new home below $4,000 with the help of 3D-printers.