进行底物磷酸化的反应是A．6-磷酸果糖→1,6-二磷酸果糖 B．琥珀酰CoA→琥珀酸

阅读白居易《杜陵叟》一诗，然后回答题。
　　　　

杜陵叟

伤农夫之困也
杜陵叟，杜陵居，岁种薄田一顷余。
三月无雨旱风起，麦苗不秀多黄死。
九月降霜秋早寒，禾穗未熟皆青干。
长吏明知不申破，急敛暴征求考课。
典桑卖地纳官租，明年衣食将何如!
剥我身上帛，夺我口中粟，
虐人害物即豺狼，何必钩爪锯牙食人肉!
不知何人奏皇帝，帝心恻隐知人弊。
白麻纸上书德音，京畿尽放今年税。
昨日里胥方到门，手持尺牒膀乡村。
十家租税九家毕，虚受吾君蠲免恩。

“剥我身上帛”以下四句是以谁的口吻写的这样写有什么好处

原发性急性肾小球肾炎最常见的病因为（）。

A.大肠杆菌

B.变形杆菌

C.β溶血性链球菌

D.葡萄球菌

E.副大肠杆菌

因气候原因，长城以北的耕作制度为[ ]

A．一年一熟

B．两年三熟

C．一年两熟

D．一年三熟

患儿，女，4岁，1周来双眼睑下垂，复视。晨清暮重。休息后好转，反复眨眼后加重。

对于明确诊断，哪项检查是不必要的

A．脑电图

B．肌电图

C．新斯的明试验

D．乙酰胆碱受体抗体测定

E．胸部X线检查

Everyone should visit a lighthouse at least once.

The most important reason for such a visit is to realize how our ancestors (祖先) battled nature with the basic tools they had . They had only basic ways of creating light , and yet they found a way of using this simple technology in isolated (孤零零的) places to save ships from hitting rocks .

Secondly , visiting lighthouses will help us to understand the lives of lighthouse keepers .By their very nature , lighthouses were built on some rocks or cliffs . Thus , the lighthouse keepers often lived lonely lives . To walk around their small home , and imagine the angry storm outside beating against the walls , is to take a step towards understanding the lives they had.

The reasons for a visit to a lighthouse are not all so backward-looking in time . It is true that lighthouses were built in out-of-the –way places . But on a pleasant sunny summer day. This very isolation has a natural beauty that many people will love to experience . Therefore, with the gentle waves touching all round the lighthouse . the visitor is likely to think it is a world preferable to the busy and noisy modern life.

Another reason for considering a visit is that the lighthouses themselves can be very attractive buildings . Mankind could often not be content just to put up a basic structure . but felt the need . even in such an isolated place , to build with an artistic touch . The result is a view for tired eyes to enjoy .

Finally , lighthouses have a romantic attraction , summed up by the image of the oil-skin coated keeper climbing his winding stairs to take care of the light to warn ships and save lives .

小题1:What is the reason to look back into the past of a lighthouse ?

A．To escape from the busy and noisy city .

B．To look for the tools used by our ancestors .

C．To experience the natural beauty of a lighthouse .

D．To learn about the living condition of lighthouse keepers .小题2:The underlined phrase “out-of-the-way” in Paragraph of means        .

A．far-away .

B．dangerous

C．ancient

D．secret小题3:Lighthouses were often built with an artistic touch       .

A．to attract visitors

B．to guide passing ships

C．to give a pleasant sight

D．to remember lighthouse keepers小题4:How many reasons are mentioned for a visit to a lighthouse ?

A．Three .

B．Four .

C．Five .

D．Six .