《守株待兔》这则寓言告诉我们（    ）

下面的措施中，哪种对保持生态环境最有利（    ）

A:Maria,____?

B:I think a good friend is good at sports.

A:You mean he or she is athletic?

B:Yes.And ____.He or she often makes me laugh.

A:Anything else?

B:Er,I think____ .

A:I can't agree with you. I like to have friends____.

B:Do you think a good friend should be popular in school, too?

A:Well,____.

A. who are different from me

B. how are you

C. a good friend likes to do the same things as me

D. that's not very important for me

E. what is a good friend like

F. you are right

G. he or she is funny

某化学兴趣小组对“NaOH溶液与稀盐酸是否恰好完全反应”进行探究．请你参与他们的探究活动，并回答有关问题．

【实验探究】