Question

【题目】 Dinosaurs（恐龙）once lived on the earth for a long time. They suddenly disappeared millions of years ago. What happened to them？That's still a mystery. People never stop searching for the answer.

Some US scientists say it is because there were not enough male（雄性的）dinosaurs. They got this idea after researching crocodiles（鳄鱼）.

Mother crocodiles lay eggs and later baby crocodiles come out. The local temperature decides the sex（性别）of the baby crocodile. When the eggs are at a temperature of 26 ℃ to 30 ℃，the babies are all girls；when the temperature is 30℃ to 34℃，there are both boys and girls；when it is 34Cto36℃，only boys are born.

Dinosaurs' babies also came from eggs. So scientists have given us a new picture: millions of years ago，it suddenly became very cold. Almost all dinosaur babies were girls. There were fewer and fewer male dinosaurs. Mother dinosaurs could not give birth to more babies. Finally，these powerful animals disappeared.

任务2：阅读短文（B），根据英文释义及首字母提示拼写单词。

【1】e_________ as many or as much as necessary

【2】l ___________ to produce eggs from the bodies of birds，insects and so on

任务3：阅读短文（B），完成同义句转换，每空一词。

【3】Dinosaurs' babies also came from eggs.

Dinosaurs' babies came from eggs __________ ____________

任务4：根据短文（B）内容回答问题。

When did dinosaurs suddenly disappear？

【4】___________________

What decides the sex of the baby crocodile？

【5】____________________________

Are the baby crocodiles only boys when it's 35℃？

【6】________________________

Answer 1

【答案】

【1】enough

【2】lay

【3】 as well

【4】Millions of years ago. /They suddenly disappeared millions of years ago.

【5】The local temperature. /The local temperature decides the sex of the baby crocodile.

【6】Yes，/Yes，they are.

【解析】

恐龙曾经在地球上生活了很长时间，数百万年前它们突然消失了，本文对恐龙灭绝的原因进行了推测。一些美国科学家说这是因为没有足够的雄性恐龙。数百万年前，天气突然变得很冷。几乎所有的恐龙宝宝都是雌性。雄性恐龙越来越少。恐龙妈妈不能生更多的孩子。最后这些强大的动物消失了。

【1】单词释义：as many or as much as necessary“尽可能多地”，根据首字母提示，答案为enough。

【2】单词释义：to produce eggs from the bodies of birds，insects and so on从鸟、昆虫等的身体中产卵。确定为动词“下蛋”。故答案为lay。

【3】also“也”，放于句中，as well“也”，放于句子的末尾，故句中的also转变成必须放于句尾的as well。

【4】所设问题 When did dinosaurs suddenly disappear？恐龙是什么时候突然消失的？答案在第一段第一行They suddenly disappeared millions of years ago. 数百万年前他们突然消失了。简答和完整回答都可以。故答案为Millions of years ago. /They suddenly disappeared millions of years ago.。

【5】所设问题 What decides the sex of the baby crocodile？什么决定了鳄鱼宝宝的性别？答案在第三段第二句。The local temperature decides the sex（性别）of the baby crocodile. 当地的温度决定了鳄鱼宝宝的性别。简答和完整回答都可以。故答案为The local temperature. /The local temperature decides the sex of the baby crocodile。

【6】所设问题Are the baby crocodiles only boys when it's35C？温度在35摄氏度时，鳄鱼宝宝只有雄性吗？答案在第三段最后一句话：when it is 34℃ to 36℃，only boys are born. 温度在34-36摄氏度时，只有雄性宝宝出生。故答案为Yes./Yes, they are。