问题 综合

【环境保护】树轮指数(每一树轮宽度/常态期望值宽度)是研究气候变化的主要途径。读“我国寒暖变化的趋势图”,回答下列问题。(10分)

(1)树轮宽度与气温、降水等要素相关。仅从气温考虑,由图可知,l900年我国气候处于______(寒冷,温暖)期;l850—1950年我国气候变化的特点是_______。  1950年后我国气候变暖的主要原因是________(自然、人为)因素。(3分)

(2)简述气候变暖对我国农业生产带来的不利影响?(3分)

(3)简述我国减少C02排放量可采取的措施。(4分)

答案

(1)寒冷(1分)寒暖波动(冷暖交替)(1分)人为(1分)

(2)水旱灾害加剧;荒漠化加剧;草原退化;沿海耕地被淹。(任3点,给3分)

(3)减少化石燃料的使用量;开发利用替代能源;提高能源利用率;调整产业结构、工业结构;加强环保教育,提高环保意识;加强C02的综合利用。(任4点,给4分)

题目分析:

(1)读图可知:l900年我国气候处于寒冷期,l850—1950年我国气候变化的特点是寒暖波动。1950年后我国气候变暖的主要原因是人为原因。

(2)气候变暖对我国农业生产带来的不利影响有水旱灾害加剧;荒漠化加剧;草原退化;沿海耕地被淹。

(3)我国减少C02排放量可采取的措施有减少化石燃料的使用量;开发利用替代能源;提高能源利用率;调整产业结构、工业结构;加强环保教育,提高环保意识;加强C02的综合利用。

点评:试题难度不大,需要关注世界重要的环境问题。

单项选择题

Comparisons were drawn between the development of television in the 20th century and the diffusion of printing in the 15th and 16th centuries. Yet much had happened between. As was discussed before, it was not until the 19th century that the newspaper became the dominant preelectronic mediam, following in the wake of the pamphlet and the book and in the company of the periodical. It was during the same time that the communications revolution speeded up, beginning with transport, the railway, and leading on through the telegraph, the telephone, radio, and motion pictures into the 20th - century world of the motor car and the air plane. Not everyone sees that processin perspective. It is important to do so.

It is generally recognized, however, that the introduction of the computer in the early 20th century, (48) by the invention of the integrated circuit daring the 1960s, radically changed the process, although its impact on the media was not immediately (49) . As time went by, computers became smaller and more powerful, and they became "personal" too, as well as (50) , with display becoming sharper and storage (51) increasing. They were thought of, like people, (52) generations, with the distance between generations much (53) .

It was within the computer age that the term "information society" began to be widely used to describe the (54) within which we now live. The communications revolution has (55) both work and leisure and how we think and feel both about place and time, but there have been (56) view about its economic, political, social and cultural implications. "Benefits" have been weighed (57) "harmful" outcomes. And generalizations have proved difficult.

57()

A.above

B.upon

C.against

D.with

多项选择题