美国有少数几个州允许安乐死，但是有严格的条件，俄勒冈州就是安乐死合法的州之一。为此，俄勒冈保健科学大学对安乐死的焦点----病人的自愿要求----进行了调查，获得了一些重要的结果，对安乐死是否能合法和实施具有重要的影响。这揭示了（  ）

①哲学的基本问题，即思维和存在具有一致性

②不可知论贯彻生活的各个方面

③马克思主义哲学是科学的，具有指导人们实践的作用

④哲学辩证观是人们生活和实践活动中遇到和无法回避的

学习了性状的遗传后，同学们议论纷纷，以下四位同学的说法，不正确的是（  ）

甲：“基因组成相同，性状一定相同”

乙：“性状表现相同，则基因组成一定相同”

丙：“隐性基因控制的性状一定被隐藏起来”

丁：“生物的变异都能遗传给后代”

Subject: Can you help?            

From: Rose

Dear Knowledgeable,

    I have a good friend, Ann. She is very clever and can speak English really well. A very important English speech contest for our whole city will be held next month. Our classmates all think Ann is the best person to represent the class in the school contest and make sure she will win. But the problem is that she's very shy and that she's terrified of speaking in front of other people.

    She can't tell others about it, because she doesn't want to let her friends down. I can't think of any good advice to give her, but you always come up with good solutions to people's problems. Can you give us some good advice？Do you think we can tell the truth to the rest of the students?

Yours,

Rose