组合机床自动线适用于加工( )工件。A．较简单 B．特殊结构 C．复杂 D．箱体类

The koala is one of Australia’s most treasured creatures, which is a lovely little creature. But now, it is in big trouble.

Affected by habitat (栖居地) loss and climate change, like many other uniquely Australian animals, koalas are being squeezed into smaller regions. But at present, it is a deadly disease, a somewhat silent killer that causes a further decline in the koala population,  that is worrying many scientists about the fate of the koala.

The killer is Chlamydia, which has caused symptoms in up to 50 percent of the wild koalas, with probably even more infected (感染) but not showing symptoms. It has been particularly severe in Queensland, where nearly all koalas are infected. The disease causes many symptoms including eye infections, which can lead to blindness, making it difficult for them to find their primary food.

Treating Chlamydia in wild koalas is a challenge. There is no treatment available for it. Only a small percentage of the animals can be treated successfully and returned to the wild. Besides, there is no national plan in Australia to save the koala；it is up to each region to make management plans for its koala population.

The good news is that researchers are working to test a vaccine (疫苗) that would help prevent further spread. If all goes well, plans can be carried out to distribute the vaccil1e more widely. But it’s impossible to vaccinate all wild koalas.

Another possibility would be to make vaccine distribution a routi11e part of treatment for the thousands of koalas brought into care centers every year after they are injured by cars or dogs.

While it is a combination of problems that are affecting the wild koala population, many experts believe this vaccine would be an important step in helping koalas survive longer. It may buy enough time to give researchers a chance to solve some of the other problems facing Australia’s koalas.

小题1:Which isn’t considered the main cause of koala’s population decline?

A．Habitat loss.

B．Injuries from cars and dogs.

C．Climate change.

D．A deadly disease.小题2:The third paragraph mainly tells us     .

A．the serious result Chlamydia has caused to the koala

B．Chlamydia affected the koala only in particular regions

C．the most serious symptom of Chlamydia is eye infections

D．Chla1nydia can seriously affect koala’s primary food小题3:The underlined word “it” in the fourth paragraph probably refers to     .

A．the koala

B．Chlamydia

C．national plan

D．eye infection小题4: We can learn from the text that the vaccine     .

A．would cure the killer Chlamydia quite effectively

B．would only be distributed in koala care centers

C．has already been put into practical use in Australia

D．cannot be distributed to all the infected koalas小题5:It can be inferred from the text that     .

A．a national plan for saving koalas will be made soon in Australia

B．koala population is declining only in a few regions

C．researchers need enough time to so1ve the koala problems

D．experts have lost the best chance to save the infected koalas

以下提供若干组考题，每组考题共同使用在考题前列出的A、B、C、D、E五个备选答案。请从中选择一个与问题关系密切的答案。每个备选答案可能被选择一次、多次或不被选择。

胆道梗阻病人的粪便是

A．米泔水样便
B．暗红血样便
C．白陶土样便
D．柏油样便
E．果酱样便

男，10岁，感冒2周后水肿伴洗肉水色血尿；体检：BP18.6/12kPa(140/90mmHg)。

病儿就诊时的第一步检查是

A．肾功能

B．尿常规

C．尿红细胞形态检查

D．血补体C3、ASO

E．肾B超等影像学检查

现行水利产业政策规定，国民经济的总体规划、城市规划及重大建设项目的布局必须考虑（），必须有防洪除涝、供水、水资源保护、水土保持、水污染防治、节约用水等方面的专项规划或论证。

A.供水安全与水资源条件

B.防洪安全与水资源条件

C.粮食安全与水资源条件

D.防洪安全与水环境条件

简述先进制造技术的概念。