The mortality rate of the hatchings is usually high with only one out of every thousand surviving to become an adult turtle. “Out of around 100­120 eggs laid by a single female turtle, only about 80 of them hatch. The new­borns then face threats from predators like crows, jackals, etc. They also get eaten up by sea predators，” wildlife activist Biswajit Mohanty said.

　　石油的泄漏给海洋生物带来了很大的影响，本文主要论述了石油泄漏对海龟孵化的影响。

　　1．Many baby turtles couldn't get out of their nests after they were hatched because ________.

　　A．their parents failed to find them

　　B．the oil made the soil hard to break

　　C．there was too much oil surrounding them

　　D．they were too weak to get out of their nests

　　答案：B　考查细节理解。根据文章第三段中的“many baby turtles failed to move out of the nest as the soil also got harder”可知许多小海龟在被孵化出来后无力破开经过石油浸透而变硬的土壤。

　　2．The underlined “it”in Paragraph 4 probably refers to ______.

　　A．the oil spill

　　B．the mortality rate

　　C．the rate of hatching

　　D．the survival of turtles

　　答案：A　考查代词指代。根据文章第四段内容可知，如今还很难对因为石油泄漏而造成的死亡数字作出科学统计，因此it指代的是前面提到的石油泄漏。

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