题目内容
Now they could ride horses, _____ made it easier to hunt the bison.
[ ]
A. that B. which C. it D. what
SEE a cell phone cover that you like on Taobao? Forget about placing an order, paying the bill online and waiting for days for it to be delivered to you. In the near future, you'll be able to get it in minutes just by hitting "print" on your computer.
You might find it hard to believe that you could actually "print" an object like you would a picture. But it is not that hard to understand how it would work. Just as a traditional printer sprays (喷) ink onto paper line by line, modern 3-D printers spread material onto a surface layer by layer, from the bottom to the top, gradually building up a shape.
Instead of ink, the materials the 3-D printer uses are mainly plastic, resin (树脂)and certain metals. The thinner each layer is --- from a millimeter to less than the width of a hair --- the smoother and finer the object will be.
This may sound like a completely new technology, but the truth is that 3-D printing has been around since the late 1980s. Back then, it was barely affordable for most people, so few knew about it.
Last year, though, saw a big change in the 3-D printing industry--- printers became much cheaper. For example, 10 years ago a desktop 3-D printer might have cost £20,000 (200,000 yuan), while now they cost only about £ 1,000, according to the BBC.
Taken out of the factory and introduced to more diverse and common uses, 3-D printing can create just about anything you can think of ---flutes (笛子), bikinis, jewelry, aircraft parts and even human organs. In fact, scientists from Cornell University in New York have just made an artificial ear using a 3-D printer, according to Science Daily. The fake ear looks and acts exactly like a natural one.
However, as 3-D printing becomes more commonplace, it may bring about certain problems --- such as piracy. "Once you can download a coffee maker, or print out a new set of kitchen utensils (餐具) on your personal 3-D printer, who will visit a retail (零售的) store again?" an expert in 3-D printing told Forbes News. Even more frightening, what if anyone in the world could use a 3-D printer to print out a fully functioning gun?
【小题1】According to the article, in the future, the 3-D printing technology will ___.
| A.enable people to make better purchases online |
| B.be applied as widely in our daily lives as computers |
| C.change the way we make many products |
| D.shorten the time it takes for people to get what they buy online |
| A.The 3-D printing technology was taken out ofthe factory. |
| B.The 3-D printer became more affordable forconsumers. |
| C.The 3-D printer was used for medical treatmentfor the first time. |
| D.3-D printing technology began to be used invarious fields. |
| A.By analyzing a cause and an effect. | B.By making comparisons. |
| C.By giving examples. | D.By presenting research findings. |
| A.Printing out everything | B.Technology in the future |
| C.Online shopping disappearing | D.Great demand for 3-D printers |
Now we can see a man and his wife at the breakfast table. They are not speaking to each other. They haven’t spoken to each other at the breakfast table for years. The husband is reading his newspaper. We can’t see his face. The wife looks very worried as she gets a cup of tea ready for him. Today she is using a new kind of tea for the first time. The husband picks up his cup. He isn’t interested. He tastes his tea. Suddenly he puts down his newspaper. Something is different! Can it be the tea? He takes another taste. It’s wonderful. He smiles. He looks at his wife and says in surprise, “Doris, when did you cut your hair?” Doris is pleased. She answers, “Two months ago.” Doris asks, “ Herbie , when did your hair begin to become white?” He answers, “A long time ago.” Doris says, “We have been together for many years, but we never cared about each other.” Now they aren’t worried any longer. Breakfast is different. Has a new kind of tea changed their lives?
【小题1】This story happens______________________.
| A.before breakfast | B.after breakfast |
| C.at home | D.in a teahouse |
| A.Doris is drinking tea | B.Herbie likes the new kind of tea |
| C.Doris is reading a newspaper | D.Herbie is very young and good-looking |
| A.a wonderful | B.an unhappy |
| C.an enjoyable | D.a friendly |
| A.They are good friends. | B.They have just got married. |
| C.They like to talk about their hair. | D.They are no longer young. |
Birds have long been known to be the disease carries for years, but now they are receiving so much pressure due to Avian Bird Flu. Bird cause health danger to humans and animals in or around their droppings.
Bird Buffer Q2, is designed to protect your facility from unwanted troublesome birds naturally, and is especially effective for sparrow control. When birds keep coming back and you’ve tried everything imaginable, it’s time for Bird Buffer Q2.
Bird control is now safe, easy, and economical with Bird Buffer. The Bird Buffer is also simple to operate. Just hang it with Bird Buffer cables or set it on the roof. Fill it with the specially?prepared liquid, and turn it on. It is that simple. Bird Buffer Q2 is a permanent, automatic and cost?effective commercial process for indoor and outdoor bird control. Contact Bird Buffer LLC @www. Birdbuffer.com or call 866-557-4274.
Bird Buffer Q2 Frequently Asked Questions:
a) How does Bird Buffer Q2 work?
It is operated by an electrically?controlled sprayer(喷雾器)to spread the vapor at 90 mph over larger areas. A time releases the vapor every 2 minutes into the air to keep fresh vapor in the area for birds. When birds fly through the area, the tiny particles(颗粒) of vapor enter the birds breathing system, making the birds fly away. When the birds come back, they once again breathe the particles and fly away. After a few weeks, birds remember their responses and stay away.
b) How much water is needed per month?
About one gallon a mouth
c) How long does it take to get bird control?
Usually two weeks is enough to control flocks of birds from the treated area. It takes time for the birds to find a new home and new feeding grounds.
【小题1】It can be inferred that the text is used_________. .
| A.to promote the product |
| B.to warn people not to go near birds |
| C.to remind people of the present situation of bird control is |
| D.to inform people what the present situation of bird control is |
| A.In basements. | B.In wild forests. |
| C.In wildlife zoos. | D.In outdoor restaurants. |
| A.Attractive | B.Inexpensive | C.Time?saving | D.Dangerous |
| A.the time taken | B.the amount of water needed |
| C.the way it works | D.the side effects brought about |