下图是长颈鹿的进化示意图，请据图回答：
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（1）古代的长颈鹿有长颈的，有短颈的，颈的长短是可________。
（2）长颈的可以吃到高处的树叶，就容易_____下去，并能繁殖后代；短颈的，吃不到足够的树叶，就会______，体质虚弱，活下来的可能性就________，留下来的后代就________。
（3）经过许多代后，短颈的长颈鹿就被___________。
（4）自然界的生物，经过激烈的_______，_______生存下来，_______就被淘汰，这就是________。
（1）遗传的
（2）生存；营养不良；小；少
（3）淘汰
（4）生存竞争；适应者；不适应者；自然选择
| 阅读理解。 |
| A woman is at the cinema, and she is enjoying the film very much, but there is a man in the next seat, and he begins looking at the floor under her. The woman is angry and asks,"What are you doing there? What are you looking for?" "A piece of chocolate." The man says to her, "I drop(掉落)it on the floor." "A piece of chocolate?" the woman says angrily, "It is dirty now. Take this and be quiet, please. I am listening to the film." She gives the man a big piece of chocolate. But the man says, "One of my teeth is in the chocolate!" |
| 1. Where are the man and the woman? |
| A. They are in a school B. They are at the station C. They are at a shop D. They are at the cinema |
| 2. The man sits ______ the woman. |
| A. next to B. in front of C. behind D. on the left of |
| 3. The underlined word "angry" means ______. |
| A. not sad B. not light C. not happy D. not heavy |
| 4.The man wants to find the piece of chocolate because ______. |
A. the piece of chocolate is very expensive. |
| 5. The woman gives the man a piece of chocolate because ______. |
| A. she is friendly to him B. she wants to enjoy the film better C. the piece of chocolate is the man's D. she likes the man |