函数y=x2-1和y=1-x2的图像关于（　　） (A)坐标原点对称 (B)x轴

【名词&注释】

肠梗阻(intestinal obstruction)、胃肠功能紊乱(gastrointestinal dysfunction)、轴对称(axisymmetric)、肺气肿(emphysema)、高校扩大招生(enlarged university enrollment)

[单选题]函数y=x2-1和y=1-x2的图像关于（　　） (A)坐标原点对称 (B)x轴对称 (C)y轴对称 (D)直线茗+Y=0对称

A. B

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学习资料：

[单选题]_________

根据以下内容，回答下面的题目。Insure means to protect _51_ a loss of money．Most people can budget their money so that their income will cover expected expenses _52_ food, clothing, housing, and public services．But, there is no way to know _53_ who will suffer a crisis (危机) such as a serious illness, fire, flood, or a car accident．Such crises usually _54_ great expense．Even if people could predict crises, it would be hard to save enough money to _55_ the expenses．Insurance is a system _56_ a company collects money from many individuals and then pays certain expenses whenever one of those insured individuals is faced with a certain crisis．An insurance policy _57_ how much the insurance costs and how much the company will pay when a policy holder is faced with a certain crisis．There are many different kinds of insurance, _58_ hospital, motor-car and fire．Insurance can be rather expensive but most people buy insurance of some kinD．Insurance is something _59_ people buy and hope they will _60_ need．_________

A. that
B. by which
C. what
D. where

[单选题]The boy showed complete_________of his parents，advice．

A. disregard
B. ignorance
C. neglect
D. avoidance

[单选题]“Would you be_________do it for me，please?”“Of course，with pleasure．”

A. kind enough
B. as kind to
C. SO kind as to
D. so kind to

[单选题]下列句子中，没有语病的一句是 ( )

A. 只有把想法付诸于行动，才能最大限度地达到我们的目标。
B. 我们都司空见惯了那种“违者罚款”的告示牌。
C. 纪委指出，那位给儿子办婚事的局长一定要全部退回所收的礼金和少付给饭店的酒菜费。
D. 林院长最后谈到了有关高校扩大招生^{(enlarged university enrollment)}的问题，指出它是应当肯定的。

[单选题]脾浊音区缩小，见于下列哪种疾病 （　　）

A. 左侧气胸
B. 肺气肿
C. 胃肠功能紊乱
D. 腹腔积气
E. 肠梗阻

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