患维生素D缺乏性佝偻病的9～10个月婴儿多见的骨骼改变是()。A．颅骨软化 B．肋骨

肝门静脉的主要属支有____、____、____、____和____。

Mr.Smith teaches English in a middle school.He has two children. They are     . Mr. Smith calls them Mike and Dick. Jim and Alex are Mr. Smith’s students. They often go to see the twins and      with them at home. Sometimes, they      something to Dick and Mike. On Saturday, they go to Mr. Smith’s. When the twins see Jim and Alex, they are very happy. Jim asks Mike,  “   are you, Mike?” “Three.” Mike answers.

Alex behind Jim says, “Dick and Mike. Look! Pears. Don’t you want     ? Well, I have a     . If one of you can answer well, I will      him one.” The twins      Alex carefully. “I have two pears, now I eat one. How many do I have, then?”

“One.” Dick says.

Mike answers, “Two.”

“Two?” Jim says, “   ?”

“Oh, one is inside and      is outside.”

小题1:

A．twin brothers

B．twin brother

C．twins brother

D．twins brothers小题2:

A．study

B．eat

C．play

D．work小题3:

A．borrow

B．buy

C．pass

D．bring小题4:

A．How much

B．How many

C．How old

D．What time小题5:

A．to drink

B．to eat

C．eat

D．play小题6:

A．game

B．problem

C．question

D．puzzle小题7:

A．give

B．catch

C．draw

D．finish小题8:

A．hear

B．listen to

C．listen

D．look at小题9:

A．How

B．Where

C．Why

D．What小题10:

A．Other

B．another

C．the others

D．the other

爱因斯坦总结的人生成功公式是：A（成功）＝X（工作）＋Y（方法）＋Z（诚实）。这个公式对于当今我们具体的每一个人来说具有指导意义，尤其是Z更为需要，因为Z[ ]

A．为融洽人际关系提供保障

B．为集体进步提供条件

C．为改善个人环境提供支持

D．为个人发展创造条件

我国高速铁路技术世界领先。高速铁路的无缝钢轨是将钢轨间的接头用铝与氧化铁发生铝热反应进行焊接而成的。对于铝热反应：Fe₂O₃ + 2Al  2Fe + Al₂O₃，下列说法中正确的是

A．Fe元素的化合价升高

B．Al被还原

C．Fe₂O₃发生氧化反应

D．Al是还原剂

制动系统是制约叉车行驶运动的机构，可以（）车辆行驶积蓄的动能。