正确答案: C

盲肠

题目：结肠带、结肠袋、肠脂垂存在于 （ ）

解析：C

查看原题

举一反三的答案和解析：

[单选题]George asked the question because he wanted to show that he was ______.

eager to learn

解析：

    47．答案为D  此考题为细节题。根据文章最后一段第2句George thought that he had better ask a few questions to show how interested he was and how much he wanted to learn to fly，就可肯定D正确。而 A的意思是“有趣的”，而不是“感兴趣的”，B的意思是“不紧张的”，C的意思是“不同的”．故A，B和C是错误的。

[单选题]电视在当代艺术传播活动中作用突出，它属于艺术传播诸要素中的 ( )

传播媒介

[单选题]甲状旁腺激素的作用是（ ）

血钙升高，血磷降低

[单选题]生态学建立时期的主要研究内容是（ ）

个体及种群生态学

[单选题]Continued use of alcohol and drugs can______.

cause people to be in the habit of taking them

解析：

此题为细节题。根据第三段的最后一句After…physically and psychologically(心理地) addieted(上瘾的)，就可以知道继续喝酒或吸毒的原因是心理和生理双重依赖。

[单选题]The author suggests that a man becomes a philosopher when he ______.

seeks a meaning for life

解析：答案为D。根据第二段第二句，Potentially every man is a philosopher because in the depths of his being there is an intense longing to penetrate to the meaning of the mysteries of existence作出该项选择。

[单选题]The chairman insist that there_________ a meeting to be held within the shortest possible time.

be

解析：本句考查虚拟语气在insist等动词后的宾语从句中的用法。insist等表建议、愿望、命令的动词后面的宾语从句，其谓语动词用虚拟语气(should+动词原形)，其中should可省略。题干的意思是：“主席坚持要在最短的时间内举行会议。”

[单选题]在北半球中纬度的山区，阳坡的环境特点是( )

温度较高，相对湿度较小