题目内容：

任务型阅读(10分):

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。

Unlike modern animal scientists , dinosaur (恐龙) scientist cannot sit on a hillside and use telescope to watch dinosaurs in order to know how they lived and whether they were good parents .   71   .

It’s very difficult for the scientists to reach an agreement because different results can be got from the same fossils(化石) .   72    . They might have formed when an entire group of dinosaurs got stuck all at once, or they might have been the result of dinosaurs getting stuck one after another over a course of a few centuries . Thus we can say that dinosaurs might have in the first case lived in big groups and in the second lived alone .

    73    .  A kind of dinosaurs called Sauropods left behind tracks in the western United States that appear to run north and south , suggesting that they even moved long distances together .

As to whether dinosaurs cared for their young , dinosaur scientists have turned to the closest living relatives of dinosaurs —birds and crocodiles — for possible models .     74   .  The discovered fossils of dinosaurs sitting on their eggs and staying with their young suggest the parents were taking care of their babies , but we still cannot say that all dinosaurs did the same .

75    .  Dinosaur scientists will have to find more proof to reach an agreement .

A．There is still a long way to go before the above questions could be answered .

B．Though there are two different results , dinosaur scientists now generally agree that at least some kinds of dinosaurs lived in big groups .

C．Birds give a lot of care to their young , while crocodiles just help their young to the water .

D．Many fossils of the same kind of dinosaurs have been dug out from one place .

E. Half of the dinosaurs lived alone .

F. Birds hardly pay attentions to their young .

G. Instead , they have to search hard for information from dinosaur’s fossils .

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