育才小学四年级有4个班，每班52人；五年级有3个班，每班55人；四年级和五年级共

The right pair of exercise shoes can do a lot to prevent discomfort, personal trainers say. Here are shopping tips:

 小题1:   Depending on exercise types, shoes designed for walking, running  tennis and so on.

Shop when you normally exercise. Feet actually get bigger throughout  the day, sometimes swell up by nighttime. 小题2:  

 小题3:   Never buy a pair of shoes based only on the size of footwear you normally buy. Bring the types of socks you’d wear to exercise and go  for a walk through the store.

Talk to an expert. Shoe salesmen and personal trainers can study  your stride (步伐)and the shape of your feet.小题4:   

 小题5:    Many trainers recommend taking the place of exercise shoes three to five months .

A．Think about how much you can afford to buy the exercise shoes.

B．Consider your kind of exercise.

C．Try them on.

D．Don’t shop in the morning if you often take exercise in the eveningE.Pay more attention to new style shoes.

F.Replace worn shoes regularly.

G.Usually they can recommend the best shoes to guard against injuries.

建设工程文件档案资料( )。

A．是指工程建设过程中形成的各种形式的信息记录

B．是指工程活动中直接形成的具有归档保存价值的各种形式的信息记录

C．由建设工程文件和建设工程档案组成

D．由建设工程文件、建设工程档案和建设工程资料组成

以下是与设置系统菜单有关的命令，其中错误的是______。

A．SET SYSMENU DEFAULT

B．SET SYSMENU TO DEFAULT

C．SET SYSMENU NOSAVE

D．SET SYSMENU SAVE

电感在电路中具有（）的作用。