A：科技越发达，人们利用的资源越多，人口合理容量越小
B：消费水平越高，人均所需资源越多，人口合理容量越大
C：资源越丰富，能供养的人口数越多，人口合理容量越大
D：地域越开放，人们利用的资源越多，人口合理容量越小
小新抛一枚质地均匀的硬币，连续抛三次，硬币落地均正面朝上，如果他第四次抛硬币，那么硬币正面朝上的概率为（ ）
近代中国政体经历了从君主专制到民主共和制的转型。建立中国第一个共和制政府的事件是（ ）
给出三个多项式：①2x2+4x﹣4； ②2x2+12x+4； ③2x2﹣4x请你把其中任意两个多项式进行加法运算（写出所有可能的结果），并把每个结果因式分解．
阅读下面材料,从每题所给的三个选项(A、 B和C)中,选出最佳选项,
Let's read the conversations and guess the meaning of the following expressions.
It's up to you.
A: What would you like for dinner tonight?
B: I'm not sure. What do you want?
A: It's up to you. Whatever you want, we will have.
In your dreams!
A: Guess what? This weekend, I caught a fish this big.
B: No way.
A: Yeah, it was huge!
B: In your dreams! It's impossible that you caught a fish that big.
Play it by ear.
A: Hey, what do you want to do this weekend?
B: I don't know. Maybe we can go to see a movie or have dinner. Why don't we play it by ear?
A: Sure. Let's decide as we go along.
Keep my fingers crossed.
A; Hey, How are you?
B: Hey, I am doing great. I did well in a job interview yesterday. I really hope to get the job.
A: Oh, have you heard back from them?
B: No, not yet. But I'm keeping my fingers crossed. Hopefully they'll ca11 me today.
Miss the point
A: Okay. So now do you understand?
B: I'm not sure. Can you explain it again? I think I missed the point.
A:. All right. I'll explain it one more time.
下列各句中不含古今异义的一项是（ ）
