Dinosaurs were reptiles which became
extinct about 65 million years ago. The most intriguing question about dinosaurs
has always been " (21) did they die out" There is no simple
answer to this question, (22) many hundreds of scientists are
studying the problem. They are not studying the extinction of the dinosaurs
(23) , but the whole question of extinction. Many other plants
and animals have (24) in the past, and it is important to
understand (25) this happened. Having this information could
help save many species that are (26) in the modern world.
Humans are causing extinctions now, because of pollution and other damage
(27) the environment. Maybe the dinosaurs can tell us how to
save the earth today, (28) their extinction 65 million years
ago! Some of the early dinosaur scientists, 100 year A. when B. why C. how D. / [填空题]Which department conducts job interviews
我来回答: 提交
|