列宁指出:俄国革命的国际环境、军事形势、无产阶级政党在苏维埃中获得多数,再加上农民起义和人民转而信任布尔什维克党,这一切把武装起义提到日程上来了。”把武装起义提到日程上来了”的”国际环境”主要是指（   ）

①在人们的实践中不断发展   

②是主观与客观具体的历史的统一

③在认识过程中不断被推翻   

④是客观与主观具体的历史的统一

I was watching the clock all through the meeting, as I had a train ______.

    A robot is a special kind of machine. It is a machine that can follow instructions( 命令).

    1 it is a machine, it hardly makes mistakes or gets tired. And it 2  complains, unless you tell it to!

    Robots are around us. Some robots are used to 3  things. For example, robots can help make cars. Some robots are used to explore(勘察) dangerous places. Some robots can help clean your house. Some robots can even 4  human languages. They can be used to help answer telephone calls. Some robots look like 5 , but most robots do not. They just look like machines.

    Long ago, people imagined 6 . Over 2,000 years ago, Homer, a famous poet, imagined robots. His robots were made of gold, but they were not 7 . Nobody was able to make a real robot at that time. The  8  real robot was made in 1961. It was called Unimate.

    In the future, we will have even more robots. They will do things that we can't do, or that we don't want to do, or that are too 9 for us. For example, robots will help us fight fires and illnesses and 10 things. They will help make our life better.

    An earthquake is a shaking of the ground____(cause) by the sudden breaking and shifting of large sections of Earth's rocky outer shell. Earthquakes are among the most____(power) events on earth, and their results can be terrifying. Rock movements during an earthquake can make rivers____(change) their course. Earthquakes can cause great damage and loss of____(live). Large earthquakes beneath the ocean can create a series____huge and destructive waves called tsunamis____flood coasts for many miles. Earthquakes almost never kill people____(direct). Instead, many deaths and injuries in earthquakes result from ____(fall) objects and the collapse（倒塌）of buildings, bridges, and other structures. Fire caused from broken gas or power lines is another major danger during____quake. Spills（溢出）of ____(harm) chemicals are also a concern during an earthquake.