4．fortunately adv. 幸运地

　　5．responsible adj. 负责任的

　　1．hold one's breath 屏住呼吸

　　2.pass away 去世

　　原文：...thinks it also has a lot to do with the fact that Superman was the worlD s first superhero！(同位语从句)

　　译文：……认为这与超人是世界上第一位超级英雄有关。

　　仿写：In spite of the fact that_the_police_had_warned_them_of_the _danger in the ancient cave, these young men still made an attempt to explore it.

　　尽管警方已警告这些年轻人洞里的危险，他们仍尝试勘探古洞。

　　Ⅱ.七选五(建议用时10′)

　　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选项。

　　[2016·保定摸底]Winter begins in the north on December 22nd. People and animals have been doing what they always do to prepare for the colder months. Squirrels, for example, have been busy gathering nuts from trees. __1__

　　They examined differences between red squirrels and gray squirrels in the American state of Indiana. The scientists wanted to know how these differences could affect the growth of black walnut (黑胡桃) trees. __2__The black walnut tree is also a central part of some hardwood forests.

　　Rob Swihart of Purdue University did the study with Jake Goheen, a former Purdue student now at the University of New Mexico. The two researchers estimate that several times as many walnuts grow when gathered by gray squirrels as compared to red squirrels. Gray squirrels and red squirrels do not store nuts and seeds in the same way. Gray squirrels bury nuts one at a time in a number of places. __3__. So some nuts remain in the ground. Conditions are right for them to develop and grow the following spring. Red squirrels, however, store large groups of nuts above ground.

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