D．why the white shark could be clearly recognized

　　D　[段落大意题。根据第三段的"The researchers point out that the massive shark is recognizable by her numerous scars."以及这一段后面的内容可知，本段主要是在解释为什么这条大白鲨很好认出来。]

　　3．We learn that white sharks ．

　　A．don't typically reach over 20 feet long

　　B．hardly give birth to 14 fully formed pups one time

　　C．can be hunted by larger predatory fish in the ocean

　　D．usually weigh about 5，000 pounds after they

　　grow up

　　A　[推理判断题。根据第四段的第二句可知，这种鲨鱼长到20英尺以上是比较少见的。]

　　4．What is implied in the underlined sentence in the last paragraph?

　　A．Scientists know about white sharks very well.

　　B．White sharks are more violent than people think.

　　C．White sharks aren't always violent or aggressive.

　　D．More research is needed to know about white sharks.

　　C　[推理判断题。画线句子的意思是说研究表明大白鲨并不是像电影里描述的那样，只会嗜血，它们还有友好的一面，故选C项。]

　　IV.完形填空

　　I love wildlife very much.Last Thursday night，I 1 that a ton of ivory was going to be crushed in New York City's Times Square.I was 2 and decided to go and have a look.

Later that night, I called my elder cousin Alice，who is also a wildlife 3 and tries hard to protect wild animals.She showed great 4 and decided to go with me the