Passage 1（2019 •哈尔滨）
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 34℃ to 36℃, 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.
阅读短文，根据英文释义及首字母提示拼写单词。
69. e____ as many or as much as necessary.
70. l____ to produce eggs from the bodies of birds, insects and so on
阅读短文，完成同义句转换，每空一词。
Dinosaurs’ babies also came from eggs.
Dinosaurs’ babies came from eggs 71. ____ ____ 72. ____ ____.
根据短文内容回答问题。
When did dinosaurs suddenly disappear?
73. __________________________________________.
What decides the sex of the baby crocodile?
74. __________________________________________.
Are the baby crocodiles only boys when it’s 35℃?
75. __________________________________________.
【答案与解析】
69. enough 【解析】由单词释义可以确定为形容词enough(足够的)。
70. lay 【解析】由单词释义可以确定为动词lay(下蛋)。
71—72 as well 【解析】also和as well都意为“也”，also位于句中，as well 位于句末。
73. Millions of years ago./They suddenly disappeared millions of years ago. 【解析】由第一段第二句可知答案。
74. The local temperature./The local temperature decides the sex of the baby crocodile. 【解析】由第三段第二句可知答案。
75. Yes. / Yes, they are. 【解析】由第三段中的“when it is 34℃ to 36℃, only boys are born”可知答案。
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 34℃ to 36℃, 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.
阅读短文，根据英文释义及首字母提示拼写单词。
69. e____ as many or as much as necessary.
70. l____ to produce eggs from the bodies of birds, insects and so on
阅读短文，完成同义句转换，每空一词。
Dinosaurs’ babies also came from eggs.
Dinosaurs’ babies came from eggs 71. ____ ____ 72. ____ ____.
根据短文内容回答问题。
When did dinosaurs suddenly disappear?
73. __________________________________________.
What decides the sex of the baby crocodile?
74. __________________________________________.
Are the baby crocodiles only boys when it’s 35℃?
75. __________________________________________.
【答案与解析】
69. enough 【解析】由单词释义可以确定为形容词enough(足够的)。
70. lay 【解析】由单词释义可以确定为动词lay(下蛋)。
71—72 as well 【解析】also和as well都意为“也”，also位于句中，as well 位于句末。
73. Millions of years ago./They suddenly disappeared millions of years ago. 【解析】由第一段第二句可知答案。
74. The local temperature./The local temperature decides the sex of the baby crocodile. 【解析】由第三段第二句可知答案。
75. Yes. / Yes, they are. 【解析】由第三段中的“when it is 34℃ to 36℃, only boys are born”可知答案。
