While building a tunnel through the mountain, ． A．an underground lake was discovered B．there was an underground lake discovered C．the workers discovered an underground lake D．a lake was discovere 题目和参考答案——青夏教育精英家教网—

题目内容

While building a tunnel through the mountain, ______ ．
　

A．an underground lake was discovered	B．there was an underground lake discovered	C．the workers discovered an underground lake
D．a lake was discovered underground

解析

练习册系列答案

智慧学习（同步学习）明天出版社系列答案

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Without plants, people could not live. We eat plants.______ 1_____ And we need plants for another reason---we need them beacause they are beautiful.

____2 Imagine no flowers with their sweet smells, their beautiful colours and their lovely shapes. Imagine, when the wind blows, we are not able to hear the leaves of the trees or watch the branches swing from side to side.

____3____ That is why we have parks full of trees and flowers. That is why

people always like houses with room for some grass and a garden.

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was given love and hopeful ideas. ___5____ Under the earth it had more and longer roots; above the earth, it had a thicker stem and more leaves.

Plants get energy from the sun.

Do you give them love and take care of them?

After six months, The deserted plant faded(凋谢) away.

After six months, the beloved plant was bigger.

We take in oxygen that plants make.

Everywhere people need beautiful plants.

Imagine a world without plants.

One day Daddy and I was going for a walk around the 1.

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Scientists are uncovering the secrets of two port cities lost under the waters of the Mediterranean Sea, a researcher said yesterday.

Herakleion and Menouthis were rich and proud cities until something reduced them to rubble (碎石) and buried them in the mud beneath 30 feet of sea water, French underwater explorer Franck Goddio said at the American Geophysical Union conference.

“This is a mystery that is ongoing,” said Goddio, a founder of the European Institute of Marine Archeology, a Paris-based underwater research organization backed by the wealthy Hilti Foundation of Liechtenstein(列支敦士登基金会).

The destruction of the twin port cities has haunted Goddio ever since he happened upon the site about 15 miles from Alexandria while exploring sunken ships from Napoleon’s fleet.

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Walls of shops, remains of streets and gold artifacts have been found and recovered.

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Other researchers believe a massive wave, caused by either an offshore earthquake or a distant underwater landslide, could explain the catastrophe. Still others think rising seas and a shift in the Nile River outlet doomed the cities.

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A. the two port cities were famous for their wealth and the mystery

B. the two cities belonged to France

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D. the American Geophysical Union conference was once held in one of the two cities

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We arrived in Spain for the first time a few weeks ago. I decided to 21 a car because we had sold the one we had in England before 22 home. Yesterday the sales office rang us to say the car was 23 . I had tried out a model like it before, but as I was not yet 24 driving in this city, my wife did not want me to collect it 25 so we went together to 26 it. We paid for the car and 27 the papers. They told us that there was 28 petrol(汽油)to take us to a garage, where we could fill up. The 29 garage to the office was about 100 yards away and we got there 30 . But when I turned into main road I suddenly saw a lot of cars racing 31 me. I got out of 32 as fast as I could by backing into the garage 33 and the man behind 34 me.

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