小汽车和客车后面的玻璃上贴有一些平行的线条，对此，小明认为是为了美观，小丽认为跟后边车辆射来的灯光有关，为此他们采访了小车司机，没想到司机叔叔只知道它们是一整根金属线，通电可以发热，除此之外也不知道它有什么作用．你能帮他们解释吗？

    Both humans and animals have enemies. It is easy for us to know the difference between our friends and our enemies. But can other animals do the same? Elephants can! They can use their sense of vision and smell to tell the difference between people who pose a threat(威胁) and those who do not. In Kenya, researchers find that elephants react differently to clothing worn by men of the Maasai and Kamba ethnic groups. Young Maasai men spear(刺)animals and thus pose a threat to elephants; Kamba men are mainly farmers and are not a danger to elephants.

    In an experiment conducted by animal scientists, elephants were first presented with clean clothing or clothing that had been worn for five days by either a Maasai or a Kamba man. When the elephants noticed the smell of clothing worn by a Maasai man, they moved away from the smell faster and took longer to relax than when they noticed the smells of either clothing worn by Kamba men or clothing that had not been worn at all.

    Clothing color also plays a role. In the same study, when the elephants saw red clothing not worn before, they reacted angrily, as red is typically worn by Maasai men. Rather than running away as they did with the smell, the elephants acted aggressively(攻击地) toward the red clothing.

    The researchers believe that the elephants' emotional(情绪的) reactions are due to their different senses of the smells and the sights. Smelling a potential danger means that a threat is nearby and the best thing to do is run away and hide. Seeing a potential threat without its smell means that risk is low. Therefore, instead of showing fear and running away, the elephants express their anger and become aggressive.

根据短文内容，从短文后的选项中选出能填入空白处的最佳选项，选项中有两项为多余项。（说明：E请填涂AB；F填涂CD；G填涂ABC）

    Any car accident is frightening, but an accident in which your vehicle is thrown into the water, with you trapped inside, is absolutely terrifying. ____

    However, most deaths result from panic, without a plan or understanding what is happening to the car in the water. By adopting a brace position (防冲击姿势), acting decisively and getting out fast, you can save yourself from a sinking vehicle.

    Brace yourself for impact. As soon as you’re aware that you’re going off the road and into a body of water, adopt a brace position. The impact could set off the airbag system in your vehicle, so you should place both hands on the steering wheel in the “ten and two” position.

    Undo your seatbelt. ____ Unbuckle the children, starting with the oldest first. Forget the cellphone call. Your car isn’t going to wait for you to make the call.

    ____ Leave the door alone at this stage and concentrate on the window. A car’s electrical system should work for up to three minutes in water, so try the method of opening it electronically first. Many people don’t think about the window as an escape option either because of panic or misinformation about doors and sinking.

    Break the window. If you aren’t able to open the window, or it only opens halfway, you’ll need to break it with an object or your foot. It may feel counter-intuitive (有悖常理的) to let water into the car. ____

    Escape when the car has equalized. If it has reached the dramatic stage where the car cabin has been filled with water and it has become balanced, you must move quickly and effectively to ensure your survival. ____ 

    While there is still air in the car, take slow, deep breaths and focus on what you’re doing.

A. Open the window as soon as you hit the water.

B. Surviving a sinking car is n ot as difficult as you think.

C. It takes 60 to 120 seconds for a car to fill up with water usually.

D. Such accidents are particularly dangerous due to the risk of drowning.

E. In conclusion, if you know what to do in the water, you’ll be safe.

F. This is the first thing to attend to, yet it often gets forgotten in the panic.

G. But the sooner the window is open, the sooner you can escape directly through it.

①在生活困难的人家，一个人要是逼得父母动老本，那就是坏蛋，就是流氓，就是无赖了。____

②这封信成了我们家里的福音书。____

③我们上了轮船，离开栈桥，在一片平静的好似绿色大理石桌面的海上驶向远处。____

④我心里默念道：“这是我的叔叔，父亲的弟弟，我的亲叔叔。”____