搜题请搜索小程序“爱下问搜题”
问题 单项选择题 A1/A2型题

患者，男，46岁上腹部慢性周期性疼痛20年，今日突发腹部剧痛，急诊就医腹部平片示患者右侧膈肌下方游离气体影最可能的疾病是（）

A.肠梗阻

B.胃溃疡

C.急性肠炎

D.胃肠穿孔

E.十二指肠溃疡

答案

参考答案：D

选择题

设a为最小的正整数，b是最大的负整数，c是绝对值最小的数，d是倒数等于自身的有理数，则a-b+c-d的值为（　　）

A．1

B．3

C．1或3

D．2或-1
查看答案
完形填空

语法填空（共10小题； 每小题1.5分，满分15分）

阅读下面短文,按照句子结构的语法性和上下文连贯的要求,在空格处填入一个适当的词或使用括号中词语的正确形式填空。

Animal testing

“It is always my ambition to be a research analyst studying amphibian anatomy（两栖动物解剖学 ）for the benefit of mankind.” said Dr. Cull to the high school students touring the laboratory. “My ancestors were all scientists and my father taught   1  that it is simply amazing to appreciate the details in each creature. I also hope that my research can help us to understand   2  humans influences these creatures so that we can know how to improve   3 (environment) problems and correct our wrongs.”

“You are very ambitious, Dr. Cull.” a bright, amber-haired girl said. “So you are looking for similarities between animals and humans?”

“Yes, and there are already enough findings. We know much about how anesthetics(麻醉药) work, for example,   4 (base) on clinical trials with rats.” “But I disagree with using animals for tests!” another student suddenly said. “  5  is often discussed whether using animals for testing is moral. But the knowledge we have collected about health, vaccines, antibiotics   6 (be) incredible. We have benefited a lot  7   animal research.”replied the Doctor.

“  8  I've seen videos of animals for research put in bad conditions.”Another student broke in.  “Oh, it seems that we've hit on   9  interesting topic.What about stepping into this conference room and discussing it   10 (far)？”
查看答案