题型训练 阅读理解（三） 阅读下列短文，从每题所给的A、B、C和D四个选项中，选出最佳选项,并在答题卡上将该项涂黑。
A A Just because you see them at the zoo it doesn’t mean they’ re doing all right in the wild.
Giraffes IUCN(世界自然保护联盟）has put some giraffes at a critically endangered(淑危的）status. There are only 4,000 Kordofan and Nubian giraffes left. The giraffe population has declined primarily due to loss of habi-tat，social disorder, and poaching(偷猎）according to priority(优先考虑的事）.Some giraffes are killed just for their tails，which are considered status symbols in parts of Africa.
Whales As few as 300 North Atlantic right whales remain in the wild. In fact, six out of the 13 great whale spe- cies are endangered. Pollution is a major threat for these giants，plus，more than 1T000 whales are killed every year for commercial purposes.
Tigers All six tiger species are endangered, with Sumatran and South China tigers at a critically endangered status. Some scientists even consider the South China tiger to be “functionally extinct” since it hasn't been seen in the wild in more than 25 years. The main reasons for their population decline are poaching and destroyed habitats, as humans clear forests to gather wood and build roadways. Only about 3 ,890 tigers currently live in
the wild. Asian elephants The main threat to Asian elephants is their shrinking habitat. As the human population grows, people take their land to build roads and railway tracks. Elephants in Myanmar are al an especially high risk for being caught and traded or used illegally in the tourist industry. It is unknown just how many elephants are left on the entire continent, but experts estimate numbers could be fewer than 50,000. It’s alarming but important to learn about these animals that could go extinct within your lifetime.
21. What mostly causes the giraffe population decline? A. Loss of habitat. B. Social disorder. C. Illegal hunting. D. Giraffe-tail trading. 22.Why are South China tigers considered “functionally extinct”? A. Because China has the fewest tigers in the world. B. Because all six tiger species are decreasing rapidly. C. Because people haven't seen them in the wild for decades. D. Because their conditions haven51 improved for many years. 23. What can we know about Asian elephants? A. They are privately taken by many as a status symbol. B. The tourist industry has laid too much emphasis on them. C. Roads and railway tracks have forced them to move away. D. Human activities are to blame for their shrinking population. B Memes(表情包）have taken the Internet by storm as a new form of comedy, or even a new art form. So what exactly are memes? According to Wikipedia, a meme is an idea, behavior, or style that spreads from person to person within a culture often with the aim of conveying a particular phenomenon，theme or meaning.
The word meme was created by British biologist Richard Dawkins in his 1976 book The Selfish dene where he put forth the theory. According to Dawkins, memes are very likely to spreading and copying, but only the quality ones become successful and keep spreading to eventually reach a well-received status where the lessei ones die out. You can make a choice to use them purely for laughs or to make a political message and even both at the same time.
In the early Internet days, the memes were spread on person to person basis. As the Internet developed, its interactive nature allowed people worldwide to participate in the craze. This gave rise to early Internet memes like The Humpsterdance Song, and so memes began spreading through Internet forums, meme-special- ized websites and social media like Facebook, Myspace, etc. Soon they began being used as a commercial form of mass marketing and publicity (宣传）spreading.
Then programmers started making meme generators.By comoaring many online meme generators,we found out Filmora to be the best one.This has so many cool features. And the best thing,you can easily gen-erate meme without any kind of login process.Just come to Filmora website,select the image,gif or video from which you want to create a meme, and addd the effects and text easy as eating ice cream, So happy being!
24. According to Dawkins, what monies can pet popular? A. Memes of fine quality. B. Memes with C. Memes containing plain fun. D. Memes with 25. What can he inferred from the third paragraph? A.Memes are closely linked to the Internet. B.Memes were spread on person to person basin. C.People around the world were fond of the trend.