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国开作业公共政策概论
Earth Hour has become a global movement ______ more than 50 million people across 35 countries participating.

A、for
B、because
C、with

If fewer cars are permitted to be used in the city. People will see it _________threatening their freedom.

A、as
B、in
C、for

I.m more afraid to expose my unborn baby ________the danger.

A、to
B、in
C、with

Talk to service staff ____ early ____ possible.

A、as…as
B、so…as
C、for…as

My chief purpose is to point _______ the difficulties of the matter.

A、out
B、to
C、in

But ____number of the users is expected to rise to 44.6 million by 2022.

A、the
B、/
C、a

—Haven.t seen you for ages! What are you busy doing now? —________________

A、I hate the weather here.
B、I am working part time in a bookshop, you know.
C、Yeah, thanks for coming.

— Some cars are really expensive. — _______________

A、Certainly they are. They burn less gas.
B、I do hope so.
C、I don’t know about that.

—Sorry. I have taken your car key by mistake. — _______________

A、That’s right.
B、You’re welcome.
C、It doesn’t matter.

— Smoking may result in many diseases like cancer. — _______________

A、Be yourself ,please.
B、Oh, that is so terrible!
C、It is none of my business.

Five Tips to Make Your House Look Greener There are plenty of ways to make your house look greener. It doesn.t matter how many people reside in your home. It doesn.t even matter what is the size of your home. What matters is how your house looks and how it affects you and others residing in it. It is very necessary to make your house look greener because it has a direct impact on your health. If you keep your house greener, you will get rid of many dangerous diseases. Here are some ways to keep it greener. 1. Good and reliable Interior Indoor material, like windows, doors, cupboards, etc. must be of good quality. These things play an important role to clean the house. Doors and cupboards must be of high quality wood. Aluminium windows must be used. You must use high-quality paints for walls, doors, windows and cupboards. 2. Using wider windows and doors for ventilation. Oxygen is a necessary element to enable you to live alive. For healthy life, windows and doors must be wide and usually be kept open at least for 15 hours a day, as ventilation of air makes you fresh and healthy. 3. Placing plants especially flowers at various places No one wants an empty house, and plants definitely play a refreshing role. First, the plants provide you with oxygen necessary for survival. Second, plants and especially flowers spread heart-attracting fragrance. All unhealthy odors are eradicated from your home and you feel fresh whenever you are inside it. Flowers also make your home interior look more appealing. 4. Disposing off wastes away from home regularly. It.s very important to throw away household wastes far from your house every day. When wastes are kept untouched for many days, they attract bacteria and viruses. Flies and mosquitoes also start gathering and increasing at such places. As a result, diseases are caused. 5. Using anti-bacterial materials for washing floors and contents. Usually unclean fans, floors and walls breed bacteria and viruses, which are then carried by flies and mosquitoes. These carriers then infect the humans by contact through contaminated food or direct attacks on human body. It.s always recommended to use anti-bacterial or anti-viral cleaners for fans, floors, walls, laptops, and TVs.

1-1、A green home is closely to the size of your home.
A、T
B、F

This summer at the largest urban mall in London, visitors may notice something different at their feet. Twenty bright green rubber tiles will decorate one of the outdoor walkways at the mall. Next to it lies the new Olympic stadium in east London. The squares aren.t just ornamental. They are designed to collect the energy created by pedestrians. It is estimated that 40 million pedestrians will use that walkway in a year. It will generate several hundred kilowatt-hours of electricity from the footsteps. That.s enough to power half the mall.s out-door lighting. The tiles were developed and produced in 2009 by a 26-year-old Londoner. The 17.7-by-23.6-inch tiles are designed to be used wherever pedestrians gather en masse: transportation hubs such as train, subway, and bus stations, airports, schools,malls. The power is generated from millions of footfalls. It can be used to power a range of lightings, signs ,digital ads ,etc. Nearly 30 such projects have been installed in Europe.For two years now, four of its tiles have lined a hallway at a school near London. They collect energy from footfalls of its 1,100 students to keep the corridor lit. Music festival attendees’ footfalls have also been controlled to charge cell phones and power lights.

1-1、According to the passage, what’s the difference will the visitors notice at the largest urban mall this summer?
A、Twenty dark gray rubber tiles will decorate one of the outdoor walkways at the mall.
B、Twenty bright green plastic tiles will decorate one of the outdoor walkways at the mall.
C、Twenty bright green wooden tiles will decorate one of the outdoor walkways at the mall.

If everyone recycles even just a bit, it can make a positive ____on the environment.

A、impact
B、fact
C、detect

My MP3 player is _____, so I want to change it for an MP4 player.

A、low
B、broken
C、wrong

Finding information in today.s world is easy.The________is how you can tell if the information you get is useful or not.

A、ability
B、challenge
C、competition