平面镜成像原理是______,平面镜的像实际上是来自物体的光经平面镜______

题型:填空题

问题:

平面镜成像原理是______,平面镜的像实际上是来自物体的光经平面镜______.

考点:平面镜成像的特点和原因
题型:填空题

Thousands of people have been killed in a massive(大规模的) earthquake in Japan. The quake -- the most powerful to hit Japan in more than 100 years -- caused massive damage and many people are missing and feared dead.

The 8.9 magnitude quake struck Friday(March 11) off Japan's eastern coast, and prompted(引发) tsunami warnings(海啸警报)across the Pacific as far away as South America and the U.S. West Coast. Several days after a 8.9-magnitude earthquake and resulting 10-meter-high tsunami devastated the coastline. The United States Geological Survey says it was the fifth largest earthquake since 1900. The largest, with a 9.5 magnitude, shook Chile(智利) in 1960.

In Japan, the tsunami swept away boats, cars and hundreds of houses in coastal areas north of Tokyo. The quake shook buildings in the Japanese capital and caused several fires. All train and subway traffic in Tokyo has been stopped, and thousands of people there were unable to get back home. People are just trying to find clean water. Food supplies are running out. In the convenience stores, there are no rice balls left. There is no bottled water left. People are facing a really serious situation in the days ahead for these people that are living in areas that were only moderately(普通的) damaged. The final death toll could range from the thousands to tens of thousands, depending on how many of these communities are gone.

Japanese Prime Minister Naoto Kan said the government would do everything it can to minimize(使降到最低) the effects of the disaster. And in Washington, President Obama said the United States is ready to help the people of Japan.

小题1:The underline word damage means_____________ in the article.

A.illness

B.disaster

C.terror

D.danger小题2: Which is true according to the passage?

A.Thousands of people have been killed in a massive earthquake in Japan.

B.Only people in areas that were only moderately damaged are facing a really serious situation in the days.

C.The tsunami devastatednot only the coastline in Japan, but also the areas across the Pacific as far away as South America and the U.S. West Coast.

D.The massive earthquake caused the tsunami.小题3:According to the passage, which earthquake is the largest one since 1990 ?

A.the one happened in Japan on March 11, 2011

B.the one in Chile in 1960

C.the fifth largest earthquake since 1900

D.We don't know.小题4:If you're in Tokyo these days, what you can't get from the convenience store?

A.newspapers and magazines

B.some medicine

C.paper napkins and toothpastes

D.rice balls and bottled water小题5:The passage can't be in/on __________.

A.March 10th newspapers

B.TV

C. Internet

D. Radios

题型:填空题

简述真核生物DNA合成与原核生物DNA合成的主要区别。

题型:填空题

简述爆轰的概念。爆轰与爆炸的区别。

题型:填空题

近代以来,西方发明的_______、_______传入中国,丰富了人们的精神生活,也为后人留下了许多珍贵的历史镜头。

题型:填空题

从给出的几句话中选出没有语病的一句是( )。

A.大伙通过提高工效,合理调配和技术改造,干劲更大了
B.通过合理调配和技术改造,工效提高了,大伙的干劲更大了
C.通过提高工效,合理调配技术改造,大伙的干劲比以前大多了
D.大伙现在干劲大,是因为调配技术改造合理了,工效得到了提高

更多题库