I didn’t like Del so much. He always called me the nickname “Germy”, which meant “dirty”, instead of my real name “Jamie”. Besides, he was known as a trouble-maker in school. So when the head teacher Mr. Smith asked Del to come to his office, I naturally thought that Del had done something mean to someone. Through the window, I caught sight of a smaller boy crying. Del seemed unhappy, too.
He did not return to class that day. All of us were discussing what had happened to him. What else could such an annoying boy do? “He must have hit the boy and was sent home,” I whispered to my friends. Their eyes widened. It felt good to see them so interested in what I said.
The next morning, the whole school was talking about Del being expelled(开除) for beating up a kid. I was surprised that my assumptions were passed on so quickly. So when Del walked into the classroom, all the kids were shocked. The kids next to him shift ed their desks away. “What’s your problem?” Del asked. “I don’t want you to attack me,” one kid said. Some laughed. “Yeah, I might,” said Del. I could tell he was joking, but many kids thought he admitted he did beat up someone.
During recess(课间休息), Del tried to join the kickball game. “Neither team wants you,” one of the players said. “Why?” Del asked, looking confused. “I always play with you guys.” They ignored him and went on playing. Del sat by himself while the rest of the school enjoyed their recess away from him. Del looked lonely and sad, much different from before. I started to feel sorry for him.
Later that day, I learned what really happened. The kid was Del’s little brother and he was crying because their mother fell ill and was sent to hospital. I felt even sorrier for what I said before. I started a rumor(谣言).
注意：1．续写词数应为150左右;2．请按如下格式在答题卡的相应位置作答。
At recess the next day, I saw Del sitting alone watching the kickball game.
____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________Now that Del had forgiven me, I decided to do more before the recess was over.
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Spring rolls, those crispy delights of golden pastry (油酥面团), featuring a mix
9 . Steager is an engineer at the University of Pennsylvania. His colleague Hyun Koo is an inventor and dental researcher there. Together, they found a way to form the nanoparticles (纳米颗粒) into long, skinny bristles (鬃毛), a lot like the ones on a toothbrush. But these bristles shape-shift to fit whatever surface they encounter. They can even squeeze between teeth.
“A new way to clean teeth could help out anyone who finds this chore boring,” says Koo. But it would be especially life-changing for people with disabilities or illnesses that make it difficult or impossible to hold and move a toothbrush.
The tooth-cleaning robot works thanks to two magnets (磁铁). One goes on each side of the teeth. The nanoparticles sit in a water-based solution between the magnets. When the magnets are turned off, the nanoparticles float randomly in the solution. As soon as one magnet gets turned on, the nanoparticles clump together near its center. When you turn on the other magnet and turn off the first one, the nanoparticles extend outward in long, skinny bristles.
When there’s a tooth in the way, these bristles can’t stretch out as far as they want. So they push against the tooth’s surface. If there’s a gap between teeth, they push into the gap. Moving the magnets makes the bristles move against and between teeth.
Besides, as a bonus, the nanoparticles can kill what harms the teeth and keep them health y because it contains something commonly added to toothpaste and mouthwash.
The new invention is just a proof of concept. The researchers still need to turn it into a product that people will want to use. It must fit comfortably and safely in people’s mouths. It can’t draw too much power or cost too much. “There’s a lot of engineering to get from here to there,” says Steager. But he adds, “every good idea needs to have a start.”
1. What is a feature of the bristles?| A．They can be solved into water. | B．They can change shapes. |
| C．They only work in liquid. | D．They feel much softer. |
| A．Its shape. | B．Its function. | C．Its structure. | D．Its working principle. |
| A．Subscribe. | B．Drag. | C．Gather. | D．Remove. |
| A．The invention still needs them to put more efforts. | B．The first step is always the hardest. |
| C．Engineering can be applied to every field. | D．A good beginning is half done. |
10 . Urban Transportation in Canada
Public transportation & Transit passes
All cities and most major towns in Canada have a public transportation system with one or more modes of transportation(bus, subway, train, etc.). The bus is the most common form of urban transportation in Canada. To use public transportation, you must purchase a ticket or a transit pass. Transit passes allow you unlimited use of public transportation for a specific period(one month or more). They are usually cheaper than buying many tickets if you plan to use public transportation often.
Transportation for people with disabilities
Public transportation often has features to assist people with disabilities. In many cities and towns, there are also transportation services available specifically for people with limited mobility, such as specially equipped buses. You can find out about these services in the same way you would learn more about other public transportation options.
Etiquette(礼节)on public transportation
When taking public transportation such as a bus or train, it is important to understand the unspoken rules of conduct in the shared space. Here are a few things to note:
Be polite and respectful to others around you. For example, maintain an appropriate noise level when talking or making a phone call.
If you are carrying a back pack or a large shoulder bag in a crowded public transit vehicle, keep it close to you, preferably at your feet to avoid hitting people with it as you walk by.
Avoid pushing or touching others in order to make more room for yourself. Sometimes public transit can become very crowded, but it is important to keep calm and give others appropriate personal space.
Have your proof (证明)of payment accessible in case you are asked to show it.
1. What is the advantage of using transit passes over buying tickets?| A．Safer trips. | B．Lower costs. |
| C．Longer service time. | D．More use of transport. |
| A．By offering fewer transportation options. | B．By limiting their mobility on city buses. |
| C．By running special transport services. | D．By providing free rides in towns and cities. |
| A．Staying close to other passengers. | B．Placing backpacks at your feet. |
| C．Having your proof of payment at hand. | D．Lowering your speaking voice. |
