【题目】阅读理解

You probably know many of the things that you can do with the hundreds of different muscles in your body. But have you ever thought about how the muscles in an animal's body are different from yours? An animal's muscles are made to do the things that are most important for its life.
Lions are hunters. They depend on their ability to catch other animals. Lions must be fast in order to catch their prey(猎物). The powerful muscles in their back legs allow them to run at speeds of more than 30 miles per hour. They can also jump a distance of more than 35 feet. The strong muscles in their front legs help them catch their prey.
Snakes also use their muscles for hunting prey and for movement, but their muscles work in very different ways than lions' do. Because snakes do not have any legs, they use their muscles to push against the ground or other objects to move themselves forward. Their muscles also allow them to eat things that seem much too large. For example, a snake may eat an egg that is larger than the width of its body. How does this happen? The snake's strong neck muscles work together to push the egg down the mouth.
The elephant's long nose has a lot of muscles. Scientists believe that the nose alone has more than 100,000 muscles! This is because the elephant uses its nose much in the same way that people use their hands and fingers. Even though the nose is large, it can perform surprisingly tasks. For example, an elephant can pick up a small leaf from the ground. The nose can also be a powerful tool. An elephant can use its nose to pick up a tree by its roots or even to lift a baby elephant.
The great muscles of these animals seem pretty unbelievable. But the muscles in your body work exactly the way you need them to. After all, it might be fun to be able to jump a distance of 30 feet, but as a human being, there is just not much need for it.
(1)The underlined word “hunters” in Paragraph 2 means persons or animals that.
A.keep animals for fun
B.raise animals for meat
C.catch animals for food
D.run after animals for exercise
(2)All the following are talked about in the passage EXCEPT.
A.An elephant's nose is strong enough to pick up a tree by its roots.
B.The strong muscles in the back legs help lions catch their prey.
C.Snakes can't move themselves forward without their muscles.
D.Muscles in an animal's body are different from a human's.
(3)According to the passage, what makes the muscles in your body different from an animal's?
A.The exercise.
B.Your parents.
C.The environment.
D.Your needs.
(4)Which of the following shows the structure (结构) of the passage? (P = Paragraph)
A.
B.
C.
D.

【题目】在短文的空格内填入适当的词,使内容通顺,每空格限填一词,首字母已给。
Recently the unmanned aircraft which are called drones (无人驾驶飞机) have come into use for a number of business purposes.
Basically, a drone is a flying robot. The aircraft (飞行器) may be remotely controlled or can fly a through flight programs in their systems. The little planes used to be very costly. In the past, they were mostly used in the military (军事). But as they have din price more people have begun to use them. Rescue workers and fanners are among the new users.

A company in France is using drones to help farmers examine their crops and limit the amount of fertilizer (肥料) they use. The fast development of computer technology, image sensing devices (图像感应设备), satellite navigation (卫星导航) and cell phones has led to lower-priced drones. Researchers and developers have learned how to build smaller and less-costly drones.
Moviemakers are using drones to film from the sky. Historians (历史学家) use them when they explore a. buildings. Rescue workers use them to look for people. And now farmers are using them to m their crops.
Romain Faroux is a French businessman who starts companies. His father was a farmer. He believed drones could help fanners. He helped create a company that developed a small drone that could be controlled by people on the g. They called it “Agridrone (农业无人机).” It uses a special “optical sensor (光学感应器)” to examine crops.
The technology used is similar to that used by smartphones except it has wings. A computer program directs the drone to fly over the crops. The sensor on the drone records four different-colored “bands” of sunlight (太阳光带) that are reflected off (反射) the crops.
Jean-Baptiste Bruggeman is a farmer. He says the drone flies over his crops at different time of the season. He says this provides a lot of information about his crops. The drone pictures show him the exact amount of fertilizer the crops need. It also shows exactly where the fertilizer is needed.
Romain Faroux says farmers use information g by the Agridrone to place fertilizer only in areas where it was needed. This saves money and reduces pollution. Before they used the drones, farmers would put the same amount of fertilizer everywhere. Drones also save time because farmers can examine u to three hectares (公顷) in about a minute.

 0  143977  143985  143991  143995  144001  144003  144007  144013  144015  144021  144027  144031  144033  144037  144043  144045  144051  144055  144057  144061  144063  144067  144069  144071  144072  144073  144075  144076  144077  144079  144081  144085  144087  144091  144093  144097  144103  144105  144111  144115  144117  144121  144127  144133  144135  144141  144145  144147  144153  144157  144163  144171  159627 

违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com

精英家教网