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问题 单项选择题

分泌胆囊收缩素的是

A．患侧甲状腺及峡部全切加对侧次全切除术
B．甲状腺局部切除
C．激素治疗
D．双侧甲状腺全切加放射性碘治疗
E．放射治疗

答案

参考答案：E

解析：[解题思路] 1．壁细胞除分泌胃酸外，还可分泌内因子。2．胃泌素来源于G细胞。3．主细胞分泌胃蛋白酶原。4．胆囊收缩素是由十二指肠及空肠粘膜的I细胞分泌。

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根据材料内容选择最佳答案，并将其标号填入题前括号内。
    Your parents ever say, "Act like a lady" or "Be a gentleman" to you? But in the eyes of today's teenagers, what
qualities (品质) should a lady or a gentleman have? Let's take a look. What is a gentleman?
                                                              The girls have their say:
Huang Xiaoyu of Guizhou,
        A gentleman is not a strong, stupid guy. Ｈe doesn't get angry.
He cares about one's feelings. He's always ready to help. 
        There is a boy in my class I think is a gentleman. I didn't do well
in the midterm English exam. He comforted (安慰) me by saying I
would do better next time. His words made me feel happier.

Chen Tingting of Shenzhen,
        A gentleman always says,"Ladies first". When he comes to clean
up the classroom, he does the heavy work. He lets girls go into rooms
first. 
       There aren't any gentlemen in my class. When there are snacks,
the boys in my class are always the first to grab them!
                                                   Boys tell us what they think a lady is:
Wu Yifan of Dalian,
       Liaoning, A ladylike girl is gentle and quiet. But she's not shy;
she's not afraid of expressing herself. She is kind and beautiful.
      To me, actress Dong Jie is a lady. She is pretty and gentle. She
also has a kind heart. She does a lot for charity.

Wang Lichao of Tianjin, 
        A lady is not just pretty-looking but wise too. She never says
rude words. She is not noisy. She is always calm and at ease.
        I don't think there are any real ladies in my class. Most of the
girls are of a style I call"wild beauties".
1. Most parents hope _______.
[ ]
A. their children have good qualities
B. their children act like a lady
C. their children act like a gentleman
D. their children act as they like
2. In Huang Xiaoyu's opinion, a gentleman should ________.
[ ]
A. be strong, clever and likes helping others
B. be strong, quick and works very hard
C. be clever, easygoing and cares for, helps others all the time
D. never makes others angry
3. Chen Tingting thinks a gentleman ________.
[ ]
A. likes saying "Ladies first"
B. should respect women first
C. should do heavy work, women do nothing
D. should get into rooms first
4. In most boys' eyes, a lady like girl should _______.
[ ]
A. be rich and beautiful
B. be careful in everything
C. be good in health
D. get a good education
5. The Chinese meaning for the words "be calm and at ease" is _______.
[ ]
A. 恬静
B. 不张扬
C. 不容易
D. 不粗鲁
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单项选择题

不可做原土后座墙的土有（）。

A、粘土

B、沙性土

C、淤泥

D、碎石
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