题目

取正常小鼠，每天饲喂一定量的甲状腺激素，3周后，该小鼠        A．新陈代谢增强，促甲状腺激素含量增加 B．新陈代谢增强，促甲状腺激素含量减少 C．新陈代谢减弱，促甲状腺激素含量增加 D．新陈代谢减弱，促甲状腺激素含量减少 答案：BOn April 26,2017,China’s homemade aircraft carrier(航空母舰) hit the water in Dalian,Liaoning.1. So the whole world has paid much attention to it.The new ship is China’s second aircraft carrier and it has no name yet. China’s first carrier is Liaoning, which was bought from Ukraine(乌克兰) and later rebuilt by China. The new carrier was designed(设计) in China and the building began in 2013.It is about 315 meters long and 75 meters wide. 2. The ship must be completed at sea, which will take several years.3. It can carry planes and soldiers to war. Planes fly from and land back on it, and soldiers work and live on it. Thanks to carriers, planes can take off and land from anywhere in the ocean around the world.But an aircraft carrier is very hard and expensive to build. 4. it is said that a basic aircraft carrier is made of 60,000 tons of steel! It also uses different technologies. Finally, it takes years to build.5. When the new carrier is completed, China will become the seventh country in the world that can build an aircraft by itself, after the US, Russia, UK, France, Italy and Spain.There is no doubt that China is becoming much stronger. All Chinese are proud of the progress.阅读短文，将下列五个句子还原到文章横线处。 A. That is a little larger than three soccer fields.B.An aircraft carrier is like an airport on the sea.C.It is the largest and best ship China has ever built.D.It costs a lot of money and needs a large amount of steel.E.Today, not many countries own an aircraft carrier or have the ability to build one 1.C 2.A 3.B 4.D 5.E 【解析】这是一篇说明文。文章主要介绍了我国第二艘航空母舰的腾空出世。这也是我国第一艘自主研发的航空母舰，展现了我国的综合实力。 1.根据So the whole world has paid much attention to it.可知，整个世界都关注这艘航空母舰，所以这个航空母舰应该是中国制造的最大的最好的轮船，故选C...