试题与答案

在生物圈中,凡是个体微小、结构简单的低等生物,统称为________。它既有单细

题型:填空题

题目:

在生物圈中,凡是个体微小、结构简单的低等生物,统称为________。它既有单细胞的,如_________;也有多细胞的,如___________;还有无细胞结构的,如__________。

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0506/1a6ff73c344d8411a752f1edfda168f6.html

下面是错误答案,用来干扰机器的。

A、冰水混合物中只含有一种物质水,属于纯净物.故正确.B、只含有一种元素的物质,可能是纯净物,也可能是混合物.故错误;C、净化后的空气含有氮气、氧气等物质,属于混合物.故错误;D、铅笔芯是石墨和粘土的...

试题推荐
题型:单项选择题

阅读理解:请根据短文内容,为每题确定l个最佳选项。

The National Trust。

The National Trust in Britain plays an increasingly important part in the preservation for public enjoyment of the best that is left unspoiled of the British countryside. Although the Trust has received practical and moral support from the Government, it is not a rich government department. It is a voluntary association of people who care for the unspoiled countryside and historic buildings of Britain. It is a charity which depends for its existence on voluntary support from members of the public. Its primary duty is to protect places of great natural beauty and places of historical interest.

The attention of the public was the first drawn to the dangers threatening the great old houses and the castles of Britain by the death of the Lord Lothian, who left his great seventeenth-century house to the Trust together with the 4500-acre park and estate surrounding it. This gift attracted wide publicity and started the Trust’s “Country House Scheme” Under this scheme, with the help of the Government and the general public, the Trust has been able to save and make accessible to the public about 150 of these oil houses. Lats year, about 1.75 million people paid to visit these historic houses, usually at a very small charge.

In addition to country houses and open spaces, the Trust now owns some examples of ancient wind and water mills, nature reserves, 540 farms and nearly 2500 cottages or small village houses, as well as some complete villages. In these villages no one is allowed to build, develop or disturb the old village environment in any way and all the houses are maintained in their original 16th century style. Over 4,000 acres of coastline , woodland, and hill country are protected by the Trust and no development or disturbances of any kind are permitted. The public has free access to these areas and is only asked to respect the peace, beauty and wildlife.

Over the past 80 years the Trust has become a big and important organization and an essential and respected part of national life. It helps to preserve all that and of historical significance not only for future generations of Britons but also for the millions of tourists who each year invade Britain in search of a great historic and cultural heritage.

All the following can be inferred from the passage EXCEPT______.

A.The Trust is more interested in protecting the 16th century houses.

B.Many people came to visit the historic houses saved by the Trust.

C.Visitors can get free access to some places owned by the Trust.

D.The Trust has a story which is longer than 80 years.

查看答案
微信公众账号搜索答案