下列各项中，不属于纯社会环境的是( )。 A．家庭 B．学校 C．政府 D．

阅读理解。

　　The Great Lakes between the US and Canada are the largest bodies of fresh

water in the world. For a long time, people lived happily beside the Lakes until

the countries began to build factories along the shores. Pollution was killing the

Lakes, pretty soon, the Lakes' ecosystem (生态系统)was not right any more.

Scientists knew something had to be done.So did the government(政府). They

learnt it was important to keep the ecosystem of the Lakes healthy and strong. If

the Lakes dried up, the whole world would feel it.

Many areas would become deserts and many animals would lose their homes and

maybe die out. As a result, they set up a lab called the Great Lakes

Environmental Research Laboratory to solve(解决)the problem.

任务1：根据英文释义及首字母提示，拼写单词。

1. d____to stop living

2. s____the land along the edge of a large area of water,such as an ocean or lake.

任务2：同义句转换，每空一词。

Scientists knew something had to be done. So did the government.

3.____scientists 4.____the government knew something had to be done.

两根通电的长直导线平行放置，电流大小I₁＞I₂，电流的方向如图所示，在与导线垂直的平面上有a、b、c、d四点，其中a、b在导线横截面连接的延长线上，c、d在导线横截面连接的垂直平分线上．则导体中的电流在这四点产生的磁场的磁感应强度可能为零的是（　　）

A．a点

B．b点

C．c点

D．d点

根据我国的相关司法解释，我国民事诉讼证据制度中确立了当事人自认制度。下列关于当事人自认的表述中，正确的是：( )。

A．只要对方当事人在诉讼过程中明确表示承认，当事人就可以免除举证责任
B．对一方当事人陈述的事实，另一方当事人既未表示承认也未否认的，经审判人员充分说明并询问后，仍不作表示的，视为对该事实的否认
C．未经特别授权的代理人对事实的承认将直接导致承认对方的诉讼请求，但当事人在场且未作否认表示的，视为当事人的承认
D．当事人在法庭辩论终结前可以撤回自认而不必经对方当事人同意

Before human’s history, in the middle of an ocean, miles from the nearest island, an undersea volcano broke out. The hot liquid rock piled higher and higher and spread wider and wider. In this way, an island rose up in the sea.

As time went on, hot sun and cool rains made the rock split and break into pieces. Sea waves dashed against the rock. In this way, soil and sand came into being.

Nothing lived on the naked soil. And then the wind and birds brought plant seeds, spiders and other little creatures there. Only plants could grow at first. Only they, in sunlight, could produce food from the minerals of the soil, water and air. While many animals landed on the island, they could find no food. A spider wove its web in vain, because there were no insects for its web to catch. Insects couldn’t stay until there were plants for them to eat. So plants had to be the pioneer life on this new island.

The underlined part “in vain” can be replaced by ________.

A. tirelessly    B. uselessly    C. fearlessly    D. effortlessly

According to the passage, ________ made the island rise up in the sea.

A. rock from the nearest island     B. sand brought by the wind

C. hot liquid rock from the volcano      D. sea waves dashing against the rock

What is the correct order of things appearing on the island?

A. Spiders, birds and plants.  B. Soil, plants and animals

C. Soil, hot liquid rock and animals.    D. Hot liquid rock, animals and plants.

The passage is mainly about ________.

A. how an island formed       B. how a volcano broke out

C. how plants were brought to the island      D. how plants and animals began to live on the island

下面的信息分析方法，哪一项属于定性分析方法？（）

A.比较法

B.文献计量法

C.回归分析方法

D.时间序列法