The sports meeting won’t be put off _____ it rains.
A. until B. if C. unless D. whether
For thousands of years, people farmed the land. They grew fruits and vegetables. They hunted and fished for meat. They _____ cloth, dyes (染料) and paper from plants.
People progressed to making machines powered _____ water and steam (蒸汽), and even later, by coal, oil, and so on. Large cities were built. Factories _____ of machines created jobs in the cities for thousands of people. The Industrial Revolution (工业革命) changed the lives of many people because, for the first time, more people lived in cities than on _____.
People did not _____ these activities were harming the Earth. They didn't realize how _____ oil, gas, coal and minerals were being used up. _____ cities grew bigger and spread across the land, plants and animals began to disappear. Their nature _____ were destroyed (破坏) as people moved into new places.
As time passed, people began to _____ the need to protect the Earth and its natural resources (资源). They saw that plants and animals needed protection, so they wouldn't disappear forever. People joined together to tell others around the world to save our natural resources and _____ the Earth. And so, Earth Day was born. Each year, more and more people take part in Earth Day. What can you do to help?
1.A.stood B.washed C.made D.mixed
2.A.as B.for C.with D.by
3.A.full B.proud C.sick D.short
4.A.mountains B.rivers C.trees D.farms
5.A.help B.realize C.waste D.lose
6.A.clearly B.hardly C.quickly D.slowly
7.A.Before B.If C.As D.Though
8.A.homes B.schools C.banks D.parks
9.A.forget B.see C.remember D.get
10.A.talk about B.knock down C.try on D.care for
the, I, led to, was, office, doctor's
_____________________.
hard, solve, to, it, find, I, problem, the
_____________________.
the, to, protect, time, is, it, environment
_____________________.
was, he, introduced, to, friends, my
_____________________.
