阅读下面材料, 在空白处填入适当的内容(仅限1个单词)或括号内单词的正确形式。
Based on recent researches. Distance-1earning is slowly proving as ______ (value) as the traditional campus-based form. It is a fixed truth that this form of learning is
_____ the increase. Moreover, both students and teachers have expressed their
___________(happy) with these courses. The best part of distance learning courses is their flexible format. Students can continue
__________ (work) and study at the same time without any kind of difficulty. You will
_________ (provide) with the facilities of a virtual(虚拟的) classroom and a virtual campus. Anyone
____ upgrades their professional knowledge to a new level can apply for these courses. With an online study format, the tests and notes can be
_______ (access) with just a mouse click from your home computer. However, a student
________ (attend) an online course must take the time management
_________ (serious). Every online student must keep
___ in mind that proper management of time and study schedule is the key towards success in this format.
【原创】Zheng Xiyu works at an office in Beijing's Central Business District. Every day, it takes her roughly 40 minutes to go to work by bus. But she is thinking of _ (switch) to a different way of transport-a bicycle. She's also adapting to a vegetable diet as Iivestock can make many contributions
today's most serious environmental problems. A recent survey shows that 78% of all the 17,000 people
(question) have developed environmentally_
(friend) habits in their daily lives. They are doing things, such as taking reusable shopping bags to the store and setting the air conditioner at
temperature above 26 C in summer. On many popular social networking
(website), people are advocating a low-carbon lifestyle.Their tips include using the stairs and public transport more frequently
_ using elevators and cars. They hope this lifestyle will become more than just a trend within certain groups. As the most populous nation on the planet with the world's
(fast) growing economy, China has become the second biggest emitter(排放者) of greenhouse gases. The recent extreme weather in the southern regions
(reflect) a serious environmental challenge.Experts say there is no time
(delay) with the effort to reduce carbon emissions.
【原创】Patience is of great importance in our daily life. Once I waited a bus to come at a stop. 30 minutes
(pass), but no bus came. Both upset and annoyed, I decided to walk on
(foot). But no sooner had I left
the bus arrived. I thought if I had waited for one more minute, I would have caught it. If I chose to take
next bus, I would have to wait for
30 minutes. Only then
(do) I realize my problem. Being impatient will
(possible) waste all the effort in
we have put . Now whenever I am close to
(lose) my patience, I’ll think of this experience.
【原创】People feel ______(puzzle) by some unexplained phenomena, one example of
is the possible existence of Yeti.
is said that the Yeti is__
___(tall) than an average human but walks with amazing speed and strengths. Though some people even reported____
____(see) the footprints belonging to a Yeti, no stronger evidence for its ____
___(exist) has been found.
_____the development of science and technology, __
_____ is unknown to us today ___
___(be) explained in the future. We hope that __
____(science) will solve the mystery one day and give us a satisfactory answer.
【原创】Three years ago I______（fail）an important exam in my life and became__
___ student in an ordinary school.____
____（disappoint）as I felt at the shabby campus and the poorly-equipped classroom, I found the teachers patient and____
______ （consider）. Besides, I enjoyed the ____
___(friend) atmosphere in class. I decided to make the best of it. I worked hard and get along well ___
___ my teachers and classmates.
________ I had difficulties, they were always available. Soon, I became one of the top students in my class,___
__ greatly increased my___
______ (confident) and got me motivated.
My experience tells me that it is not what you are given but how you make use of it ___ determines who you are.
The way we cook is important. In many countries, the two choices are (nature) gas or electric-powered stoves.
The World Health Organization warns that millions of people (suffer) from indoor air pollution at present time, which results from the use of
(danger) fuels and cook-stoves in the home.
WHO officials say nearly three billion people are (able) to use clean fuels and technologies for cooking ，heating and lighting. As a result, more than seven million people die from exposure to indoor or outdoor air pollution each year. Most of the deaths are in
（develop） countries, such as lndia, China and Latin American countries.
WHO officials say opening a window or door （let）out the harmful air will not correct the situation
will only pollute the outdoors.
Nigel Bruce, is a professor of Public Health at the University of Liverpool, says researchers are developing good cook-stoves and other equipment to burn fuels
a more efficient way.
But, this is just a start. It is urging developing countries to use (clean) fuels and increase access to cleaner and more modern cooking and heating appliances（用具）.
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