一足月儿,生后10天。娩出过程顺利,混合喂养,胃纳好。近2天偶有吮奶后溢乳,大便次数

题型:单项选择题 A2型题

问题:

一足月儿,生后10天。娩出过程顺利,混合喂养,胃纳好。近2天偶有吮奶后溢乳,大便次数每天5~6次,绿色,较稀薄。其母诉小儿食欲好,尿量多。体格检查小儿一般情况好,很可能的诊断是()

A.胃肠炎

B.短肠综合征

C.喂哺量过多

D.肠旋转不良

E.坏死性小肠结肠炎

考点:儿科住院医师新生儿及新生儿疾病新生儿及新生儿疾病题库
题型:单项选择题 A2型题
把一个带正电的金属小球A跟同样的不带电的金属球B相碰,两球都带等量的正电荷,这从本质上看是因为(   )

A.A球的正电荷移到B球上

B.B球的负电荷移到A球上

C.A球的负电荷移到B球上

D.B球的正电荷移到A球上

题型:单项选择题 A2型题
在等比数列{an}中,a1=1,a10=3,则a2a3a4a5a6a7a8a9=(  )
A.81B.27
527
C.
3
D.243
题型:单项选择题 A2型题

共栖是指两种生物生活在一起,对一方有利,对另一方也无害,或者对双方都有利,两者分开以后都能够独立生活。 下列属于共栖的是( )。

A.海葵常常固着在寄居蟹的外壳上,它们分开以后仍能独立生活

B.犀牛和犀鸟,它们相互依赖,必须共同生活

C.同一草原上的狼与羊的关系

D.艾滋病毒与艾滋病病人的关系

题型:单项选择题 A2型题

Bedfordshire had its fair share of royal visits from the early stages of the 10th Century onwards and the importance that the county placed on this is evident in the monuments, country houses, churches and any number of other structures that are still present there to this day. Bedford Castle is one of those structures and, although it is nowhere near its former glory today, it is an essential attraction to visit if you really want to grasp what its heritage means to the county!

Bedford Castle was built initially as a fortress to help protect Bedfordshire on the south of the River Ouse after the people in the local towns and villages had already been subdued. It was erected in 919 on the orders of King Edward the Elder, although it was destroyed by a Danish invasion years later. This was when it was rebuilt as the castle, of which the ruins exist today!

There is a long history behind the castle that involves several kings as a result of the Duke of Bedford being an ardent royalist. Bedford Castle repeatedly offered the kings of England refuge against various storms in the form of onslaughts from abroad and various domestic threats against them, and this is where much of its fame lies, even though the castle itself is no longer there. There are various tours of the ruins that you can take when you visit though and all of the guides are extremely knowledgeable. They will happily tell you tales of the mound and the castle that preceded it.

The mound is open to the public all year round and is a proud part of the area’s heritage. It is recommended by the majority of people that visit Bedfordshire because it tells you much about why the county is currently how it is. You can view the river from the mound and the surrounding settlements as well as the remains of the castle, and every moment spent there is worth it so enjoy the history and the very nature of the county itself!

小题1:What do we know from the first paragraph?

A.The royals pay regular visits to Bedfordshire.

B.Bedfordshire had it fair share of royal visit.

C.Most of the ancient buildings are in use today.

D.Bedford Castle represents the history of the county.小题2: The underlined word “initially” in Paragraph 2 probably means _______ .

A.first of all

B.at the beginning

C.for one particular purpose

D.for a short time小题3:The kings of England came to Bedford Castle ______.

A.to seek temporary protection

B.to visit the Duke of Bedford

C.to enjoy the beauty of nature

D.to escape from the bad weather小题4:Why are visitors recommended to visit Bedfordshire?

A.It is the major heritage in that region

B.It reflects the history of Bedfordshire

C.The ancient castle is well worth visiting

D.The castle is still in good condition小题5:The purpose of writing the text is _______.

A.to introduce Bedford Castle

B.to tell the history of Bedfordshire

C.to attract tourists to Bedfordshire

D.to show where the kings used to go

题型:单项选择题 A2型题

什么叫原核微生物?原核微生物主要包括哪些类群?原核细胞有何主要特点?

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