患儿的正确诊断是（    ）

关于建设项目土建工程方案的说法，正确的是（ ）。

以下选项中，（ ）是链表不具备的特点。

若A和B两种债券现在均以1000元面值同期发行，年息均为50元。A债券5年到期，B债券6年到期。一般而言，如果两种债券的到期收益率从5%变为4%,下列表述正确的是（  ）。

Passage 1    It's one of our common beliefs that mice are afraid of cats. Scientists have long known that even if a mouse has never seen a cat before, it is still able to detect chemical signals released from it and run away in fear. This has always been thought to be something that is into a mouse's brain.    But now Wendy Ingram, a graduate student at the University of California, Berkeley, has challenged this common sense. She has found a way to "cure" mice of their inborn fear of cats by infecting them with a parasite, reported the science journal Nature.    The parasite, called Toxoplasma gondii, might sound unfamiliar to you, but the shocking fact is that up to one-third of people around the world are infected by it. This parasite can cause different diseases among humans, especially pregnant women-it is linked to blindness and the death of unborn babies.    However, the parasite's effects on mice are unique. Ingram and her team measured how mice reacted to a cat's urine (尿) before and after it was infected by the parasite. They noted that normal mice stayed far away from the urine while mice that were infected with the parasite walked freely around the test area.    But that's not all. The parasite was found to be more powerful than originally thought-even after researchers cured the mice of the infection. They no longer reacted with fear to a cat's smell, which could indicate that the infection has caused a permanent change in mice's brains.    Why does a parasite change a mouse's brain instead of making it sick like it does to humans? The answer lies in evolution. "It's exciting scary to know how a parasite can manipulate a mouse's brain this way," Ingram said. But she also finds it inspiring. "Typically if you have a bacterial infection, you go to a doctor and take antibiotics and the infection is cleared and you expect all the symptoms to also go away." She said, but this study has proven that wrong. "This may have huge implications for infectious disease medicine."
The passage is mainly about ______.

H7N9禽流感确诊后应实行（     ）

用某药治疗尿道感染84例，治疗后痊愈46例，显效17例，改善12例，无效9例。该资料类型属于（    ）。

具有养阴生津功效的药物是（    ）

关于SARS的临床表现，错误的是（    ）

在教材编写过程中，课程内容前后反复出现，且后面的内容是对前面内容的扩展和深化。这种教材编排方式是（）

人体骨骼发育正常与否，主要取决于