--When shall we start the restoration of the historic buildi

像这种对话类型的题目一定要根据上下文来答题.上句说历史建筑的重建什么时候开始,
那么回来应该是说到目前为止,我们的这项计划还没有得到委员会的同意.这样才语义通顺呀.如果用A,暂且不说语法方面,意思就说不通,不是吗?

1、a
2、

冲突是有限的,以恢复平衡.
希望能够帮到你!【学生的天地】

Preserving Natural Resources
Through the changes in the ways of making a living in a family over several generations, man has been warned against waste of natural resources and emphasizing the urgent need to preserve these resources.
Ever since man appeared on the earth, man's survival has been heavily relied on nature. Almost everything we use in our everyday life comes from notate, ranging from the food we eat, the water we drink, to the wood which is tm'ned into furniture.With the development of technology and population growth, the amount and range of materials used has increased at an alarming rate.However, natural resources are not inexhaustible. Some reserves are already on the brink of exhaustion and there is no hope of replacing them. The widespread water shortage is an example in point. If man continued to squander natural resources with no thought for the future, the later generations would be in danger. It is up to us to take effective measures before the situation gets out of hand.
Nowadays the problems about environment become more and more serious.
There are so many pollutions and natural disasters in the world, and they all
have the unpredictable effect. More and more factories function, follow that
also have some water pollutions, air pollutions. As for the special air can make
holes in the ozone layer, destroy the atmosphere as well. Flood, desert, dry,
such the disasters like those probably will be happen in next time. Therefore in
that time as hard as we can to save the earth is the most important thing to
do.A Composition of Protect Our Environment--------- Taking good care of our
environment is very important.Wherever you live,You can do something
around your neighbourhood.

it's our duty to keep our environment clean and tidy.You might ask
yourself,"have I picked some rubbish and thrown it into a dustbin?Have I ever
collected waste paper or bottles for recycling?Have I ever planted any trees or
flowers in or near my neighbourhood?"

--------If everyone makes a contribution to protectingthe environment,the world
will become much more beautiful
二
Environmental problems are becoming more and more serious all over the
world. With the development of industry and agriculture, cars make great
noises and give off poisonous gas. Trees on the hills have been cut down,and
waste water is being poured continuously into rivers. Furthermore,wherever
we go today, we can find rubbish carelessly disposed. The whole ecological
balance of the earth is changing. Massive destruction of environment has
brought about negative effects and even poses a great threat to man's
existence. From JOOZONE_COM.




We must face the situation that exists and take actions to solve our
environmental problems. For instance, new laws must be passed to place strict
control over industrial pollution, the pub!ic must receive the education about
the hazard of pollution and so on. We hope that all these measures will be
effective and bring back a healthful environment.
Environmental problems are becoming more and more serious
all over the
world. For example, cars have made the air unhealthy for people to breathe
and poisonous gas is given off by factories. Trees on the hills have been cut
down and waste water is being poured continuously into rivers.Furthermore,
wherever we go today, we can find rubbish carelessly disposed. Pollution is, in
fact, threatening our existence.




The earth is our home and we have the duty to take care of it for ourselves
and for our later generations. Fortunately, more and more people have
realized these problems. Measures have been taken to cope with these
problems by the government. Laws have been passed to stop pollution. I hope
the problem will be solved in the near future and our home will become better
and better.

有了恢复和平的希望.