题目内容

【题目】I looked for my elder sister for hours. Suddenly, I __________ her in the crowd.

A. catch sight of

B. caught sight of

C. came into sight

D. come into sight

【答案】B

【解析】句意:我找我姐姐找了好几 个小时,突然,我在人群中发现了她。 由前一句可知此处应用一般过去时,故排除A、D两项。catch sight of 见;come into sight出现在眼前。

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【题目】Directions: Fill in each blank with a proper word chosen from the box. Each word can be used only once. Note that there is one word more than you need.

The Rise of the Smart City

The information revolution is changing the way cities are run - and the lives of its residents. Cities have a way to go before they can be considered geniuses. But they’re getting smart pretty fast.

In just the past few years, mayors and other officials in cities across the country have begun to draw on 1 - about income, traffic, fires, illnesses, parking tickets and more - to handle many of the problems of urban life. Whether it’s making it easier for residents to find parking places, or giving smoke alarms to the households that are most likely to suffer fatal fires, big - data technologies are beginning to 2 the way cities work.

Cities have just 3 the surface in using data to improve operations, but big changes are already under way in leading smart cities, says Stephen Goldsmith, a professor of government and director of the Innovations in Government Program at the Harvard Kennedy School. “In terms of city governance, we are at one of the most 4 periods in the last century,” he says.

Although cities have been using data in various forms for decades, the modern practice of civic analytics(民情分析)has only begun to take off in the past few years, thanks to a host of 5 changes. Among them: the growth of cloud computing, which dramatically lowers the costs of storing information; new developments in machine learning, which put 6 analytical tools in the hand of city officials; the Internet and the rise of inexpensive sensors that can track vast amount of information such as traffic or air pollution; and the widespread use of smart phone apps and mobile devices that enable citizens and city workers alike to monitor problems and 7 information about them back to city hall.

All this data collection raises understandable privacy 8. Most cities have policies designed to safeguard citizen privacy and prevent the release of information that might 9 any one individual. In theory, anyway. Widespread use of sensors and video can also present privacy risks unless 10 are taken. The technology “is forcing cities to face questions of privacy that they haven’t had to face before,” says Ben Green, a fellow at Harvard’s Berkman Klein Center for Internet and Society and lead author of a recent report on open-data privacy.

【题目】Wish List

The Latest home hygiene(卫生) devices

PhoneSoap Pro (Price: $119.95)

https://www.phonesoap.com/

Our smartphones can collect so many bacteria that they are around seven times dirtier than a toilet. The PhoneSoap Pro uses ultraviolet (UV) light and claims to kill 99% bacteria in only five minutes. This rechargeable case can accommodate more varieties than only iPhone series.

TUSHY Classic (Price: $109)

http://www.hellotushy.com/

Attachable bidets such as the TUSHY have become hot commodities. With quick ten-minute installation, this toilet accessory simply sits beneath your toilet seat and connects to your water source without the need for electricity or a pump. With adjustable pressure and spray direction, the TUSHY can accommodate the whole family.

PureAir FRIDGE(Price $49)

https://www.greentechenv.com/

Food hygiene really matters. This small air purifier sits wirelessly between the fruit and vegetables in your fridge, maintaining fresh air within, removing any unwanted smells and autonomously destroying bacteria. This compact device uses a rechargeable battery that can last 18 to 24 days on one charge. When power is running low, there is a noticeable alarm when the fridge door is opened.

Coway Airmega (Price: $849

https://www.cowaymega.com/

In a time when we have to stay in our homes, you might be considering the quality of air inside. The Conway Airmega 400S boasts the ability to remove 99.97% of particles, including PM 2.5 and other pollutants. App-controlled,this home air-purification system will monitor your home’s air quality and make automatic adjustments to its fan speed to improve air quality in real time.

1Which of the four hygiene devices can operate without electricity?

A.PhoneSoap Pro.B.TUSHY Classic.

C.PureAir Fridge.D.Coway Airmega.

2According to the passage, which of the following statements is TRUE?

A.PhoneSoap Pro is specially designed for iPhone 11 Pro.

B.TUSHY Classic can operate without the need for water.

C.PureAir FRIDGE automatically reminds us of low power.

D.Users have to manually adjust Coway Airmega’s fan speed.

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