A:c1:c2=3:1
B:平衡时,Y和Z的生成速率之比为2:3
C:X,Y的转化率不相等
D:c1的取值范围为0 mol•L﹣1<c1<0.14 mol•L﹣1
从方框中选择恰当的句子完成对话。有两项多余。
A. How old are you?
B. May I have your telephone number?
C. I want to join the basketball club.
D. Can you play the violin?
E. W-H-I-T-E ,White.
F. Can you play basketball? G. What club do you want to join?
A: Can I help you?
B: Yes, please. ____
A: OK. What's your name?
B: Sam White.
A: How do you spell your last name?
B: ____
A: Thank you. ____
B: I'm fourteen.
A: ____
B: Yes, but I can't play it well.
A: I see. ____
B: Yes, it's 233-6589.
A: Thank you.
建立自然保护区是保护生物多样性最为有效的措施.因为自然保护区是( )
读日本略图回答下列问题。