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问题 单项选择题

患者男性，65岁，结肠癌术后1年，近来出现乏力、消瘦伴肝区隐痛。B超发现肝右前叶单个直径5cm占位。否认肝炎史。

如确诊为转移性肝癌，以下最不可能阳性的指标是

A．甲胎蛋白

B．谷草转氨酶

C．谷丙转氨酶

D．癌胚抗原

E．乳酸脱氢酶

答案

参考答案：A

选择题

占空气体积约

1
5
，性质比较活泼的气体是（　　）

A．氮气

B．氧气

C．二氧化碳

D．稀有气体
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单项选择题

In March 300 college students turned out in Washington to protest against proposed cuts in student loan funds. Another 350,000 collegians flocked to Florida’s sun-drenched beaches during March for "spring break." Since the Florida sun-seekers were more numerous, they were more representative of today’s students than those who protested in Washington, and therefore Congress need not heed the appeals of the protesting students.
The argument above makes which of the following assumptions

A．The students who vacationed in Florida did not oppose the cutting of student loan funds by Congress.

B．The students who vacationed in Florida were not in agreement with the opinion of the majority of United States citizens about the proposed cut in loan funds.

C．The students who protested in Washington were more seriously concerned about their education than were the students who vacationed in Florida.

D．The students who neither protested in Washington in March nor vacationed in Florida in March are indifferent to governmental policies on education.

E．(E) The best way to influence congressional opinion about a political issue is to communicate with one’s elected representative in Washington.
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