阅读理解 阅读下列短文，选出最佳答案。

A science fiction flying car looks like a normal car, but it is an aircraft (飞行器) that anybody can fly directly from any place to another without using roads or runways. Science fiction writers have written about flying cars for a long time. But now flying cars will soon fly out of the world of science fiction into our real world. And the dream of the science fiction writers will soon come true.

    The first-known sky car is the FSC-1. The FSC-1 looks like an expensive sports car. You can drive the FSC-1 on the road like a normal car. If you touch a button, its wings and propeller (螺旋桨) fold out and then it can take off, fly and land as an airplane. The owners of the FSC-1 can choose if they want to drive or fly.

Another flying car or sky car is the Moller Skycar M400. Although you can't drive it on the roads, it is small and easy to fly and can take off and land like a helicopter (直升飞机). Urban Aeronautics' X-Hawk is another type of sky car. It is expected to be available for about $3 million.

    Just like any new technology, flying cars have taken a long time to be developed. But some experts think the technology is far from what people imagine when they are sitting in traffic. It still needs to be improved.

    There are world records at the Olympic Games. But what are the word records in animal kingdom?

    The largest and heaviest animal on earth is the blue whale. It weighs between 110 and 120 tons. Its heart is the size of a Mini Cooper, It's got the biggest mouth in the world as well. About 100 people can fit inside it. But it doesn't eat people! In fact, the biggest thing it can eat is the size of an apple.

The giraffe is smaller than the blue whale but it is also a record breaker. It's the tallest living land animal. It's got the longest neck-about 2 metres long, and it's got the longest legs-about 1.8 metres long. Drinking is difficult, but eating from the top of trees is easy! And its tongue is 50 c m long!

    The most dangerous animal in the world isn't a lion or a bear. It's an insect! The mosquitoes (蚊子) that carry malaria kill over 1 million people a year. After that, the most dangerous animal is the venomous snake. They kill 50,000 to 125,000 people a year.

     A. the mosquito           B. the giraffe                C. the blue whale

    American schools are quite different from those in China. In America at the beginning of the term, students must select their subjects and teachers.

    Selecting is very important for your marks in America. So in the first term, don t select too many subjects, or you'll feel very nervous and tired. Then you have to ask for some teaching plans. There is some information about subjects, time arranging, marks and textbooks. At the same time you must choose the teachers. Different teachers have different teaching methods. If the teacher is called "killer", many students will give up choosing him, because this kind of teacher will leave too much homework have too many exams and give too low grades. There is another thing after you select the subjects and the teachers. How to buy textbooks makes each student feel hard. The textbooks in America are very expensive. Each one is about 30-$50. In order to save money, many students buy some used textbooks, and some students usually borrow textbooks from the school library.

    In class, discussing is very important. The teacher encourages you to ask questions or show your own opinion. They don't usually ask you to sit well. Instead they allow you to sit or stand everywhere you like.

    Have you ever been ill? When you are ill, your body becomes hot, and there are pains all over your body. You must be unhappy because of it. You don't want to work. You stay in bed feeling sad.

    What makes us ill? It's germs. Germs are everywhere. They are very small and you can't find them with your eyes, but you can see them with a microscope (显微镜). They are very, very small and there could be hundreds of them on a very small thing.

    Germs are always found in dirty water. When we look at dirty water under the microscope, we can see them in it. So your father and mother will not let you drink dirty water.

    Germs aren't found only in water. They are found in the air and dust (灰尘). If you cut your finger, and if some of the dust from the floor goes into the cut, some of the germs will go into your finger. Your finger will become big and red, and you will have much pain in it. Sometimes the germs will go into all of your body, and you will have pain everywhere.