婴儿肠套叠典型临床表现（）。 A.呕吐 B.腹痛 C.果酱样血便 D.哭闹 E.腹部

下列句子中加粗的成语使用正确的一项是[ ]

A．人们走进橘子洲头西岸的河西大学城，在毛 * * 先生曾经读书洗澡的爱晚亭下，看到千年学府岳麓书院前后，10多万莘莘学子勤学苦研，一幢幢教学楼夜深人静时还灯火通明，把大学城装点成不夜城。

B．相较《高考1977》中一群在农场里的知青，当时一直留在上海的汪海洋则幸运得多。他坦言，在创作这部电影时，知青们追火车去考场的一段最让他感动，而这段戏的设置也别有用心。

C．自主创新能力与国家利益和人民福祉休戚相关。在自主创新能力已经成为国家核心竞争力的今天，只有耐得住长跑的寂寞，才能跑在自主创新的前列，才能最终赢得未来。

D．文人以灵感为生，学人以功夫为夫，本来二者应该不分轩轾，但是中国历史的进程，却让我们对文人这一行当有了更深的怀疑。

以甲醇为原料的一款新型手机电池，其反应原理为：2CH₃OH+3X+4NaOH═2Na₂CO₃+6H₂O，其中X的化学式为（　　）

A．CO

B．CO₂

C．O₂

D．H₂

阅读理解。

     Friend is better than fortune. Friend is worse than poison in some cases. The two sentences above

are opposite and seem to be unreasonable but they can be explained as follows: the first refers to all good

friends who drive us towards good while the second all bad ones who lead us to wrong ways.

     My ideal friend is of course a good friend whose goodness is shown below: he has no bad likings,

such as smoking and drinking. He lives in frugality. He studies hard so as not to waste his golden time. At

home he honors his parents and loves his brothers; at school he respects his teachers and shares feelings

of his classmates. He treats those truly who are true to him. In a word, he has all the good characters

better than mine. I can follow him as a model. With his help I am free from all difficulties,

     Indeed, if I have such a person as my friend, I shall never fear difficulty and I shall never know the

existence of the word "failure".

1.  This passage tells us ____.

A. how to make friends with others          

B. how the writer' s friend helps him

C. what kind of person the writer's friend is

D. what kind of person we should make friends with

2. An ideal friend means ____ .

A. a true friend                          

B. a false friend  

C. an imaginary friend                    

D. an excellent friend

3. From the passage we can learn that _____.

A. the writer and his ideal friend have a lot to learn from each other

B. the writer has a lot to learn from his ideal friend

C. the writer's ideal friend has a lot to learn from him

D. the writer has only a little to learn from his ideal friend

4. From the second paragraph, we can infer the writer is sure that _____.

A. nothing cannot be done with friend      

B. only the first sentence is reasonable

C. he who does not smoke or drink must be a good friend

D. good friends should always help each other

下列需要进行遗传咨询的是（）

A.亲属中生过先天畸形孩子的待婚青年；

B.父母中有残疾的待婚青年；

C.得过乙型脑炎的夫妇；

D.家族中出现过多指、并指现象的待婚青年。