搜题请搜索小程序“爱下问搜题”
问题 改错题

找病因并修改病句。

1．我们要在广大青少年中造就一种爱科学、讲科学、用科学。

___________________________________________

2．从云龙山北望，不远处有一个高耸的土山，这便是被项羽尊称为亚父的范增墓。

___________________________________________

3．我班学生，一般情况下，大家都能自觉遵守课堂纪律。

___________________________________________

4．他每天读报，注意关心国家大事。

___________________________________________

5．这句话的后面，包含了多么丰富的“无声”的潜台词啊。

___________________________________________

答案

1．缺宾语。句末加“的氛围”。

2．代词不当。“这”改为“那”。

3．缺谓语。改为“我班学生纪律观念强……”或删去“大家”。

4．成分赘余。去掉“注意”。

5．成分赘余。去掉“无声”。

单项选择题

The ocean bottom—a region nearly 2.5 times greater than the total land area of the Earth —is a vast frontier that even today is largely unexplored and uncharted. Until about a century ago, the deep-ocean floor was completely inaccessible, hidden beneath waters averaging over 3,600 meters deep. Totally without light and subjected to intense pressures hundreds of times greater than at the Earth’s surface, the deep-ocean bottom is a hostile environment to humans, in some ways as forbidding and remote as the void of outer space.
Although researchers have taken samples of deep-ocean rocks and sediments for over a century, the first detailed global investigation of the ocean bottom did not actually start until 1968, with the beginning of the National Science Foundation’s Deep Sea Drilling Project (DSDP). Using techniques first developed for the offshore oil and gas industry, the DSDP’s drill ship, the Glomar Challenger, was able to maintain a steady position on the ocean’s surface and drill in very deep waters, extracting samples of sediments and rock from the ocean floor.
The Glomar Challenger completed 96 voyages in a 15-year research program that ended in November 1983. During this time, the vessel logged 600,000 kilometers and took almost 20,000 core samples of seabed sediments and rocks at 624 drilling sites around the world. The Glomar Challenger’s core samples have allowed geologists to reconstruct what the planet looked like hundreds of millions of years ago and to calculate what it will probably look like millions of years in the future. Today, largely on the strength of evidence gathered during the Glomar Challenger’s voyages, nearly all earth scientists agree on the theories of plate tectonics and continental drift that explain many of the geological processes that shape the Earth.
The cores of sediment drilled by the Glomar Challenger have also yielded information critical to understanding the world’s past climates. Deep-ocean sediments provide a climatic record stretching back hundreds of millions of years, because they are largely isolated from the mechanical erosion and the intense chemical and biological activity that rapidly destroy much land-based evidence of past climates. This record has already provided insights into the patterns and causes of past climatic change—information that may be used to predict future climates.

The author mentions "outer space" underlined in Paragraph 1 because______.

A．the Earth’ s climate millions of years ago was similar to conditions in outer space

B．it is similar to the ocean floor in being alien to the human environment

C．rock formations in outer space are similar to those found on the ocean floor

D．techniques used by scientists to explore outer space were similar to those used in ocean exploration
查看答案
单项选择题

下图是一个反射弧的部分结构示意图，甲、乙表示连接在神经纤维上的电流表。若在A点处给以一定强度的电流刺激，甲、乙电流表的指针发生偏转的情况是（）

A.甲发生一次偏转，乙不偏转

B.甲、乙都发生两次方向相反的偏转

C.甲不偏转，乙发生两次方向相反的偏转

D.甲发生两次方向相反的偏转，乙发生一次偏转
查看答案