在化工设备图中，由于零件的制造精度不高，故允许在图上将同方向(轴向)的尺寸注成封闭形

(2013·高考重庆卷，A)When Joe was about to start school，all signs pointed to success.Yet things turned out to be quite___.The fourth grade even found him at the___of the class.Joe  struggled day and night，but it did not____－until one stormy afternoon.
On that afternoon，____the math teacher started to introduce difficult concepts，dark  clouds covered the sky，and the storm set in.Hard though she tried to make the kids____，the thunder won the battle for their attention.No one____the concepts.Except for Joe.He understood them and answered all the questions correctly.The teacher patted him on the back，and told him to go around to the others and explain how he had  managed it.____by his newfound  success，Joe moved quickly throughout the room.Soon math time was followed by the time for____.All children naturally drew____pictures on such a day.Except for Joe.
Since then，Joe started____.Though he never made it to the top，his math teacher was always____and curious about the change：Why had that stormy day changed Joe?
On the day Joe  graduated，he presented the teacher with his most____possession－the picture of a bright yellow sun.On the picture Joe had written：This is the day I____my brightness.

小题1:	A．unfair B．boring C．disappointing D．dangerous

小题2:	A．center B．top C．beginning D．bottom

小题3:	A．happen B．work C．finish D．last

小题4:	A．until B．since C．because D．as

小题5:	A．concentrate B．change C．hide D．sit

小题6:	A．challenged B．grasped C．doubted D．admitted

小题7:	A．Relieved B．Surprised C．Encouraged D．Puzzled

小题8:	A．class B．sports C．art D．tea

小题9:	A．great B．dark C．different D．strange

小题10:

A．improving B．painting C．recovering D．studying

小题11:

A．worried B．amazed C．friendly D．cautious

小题12:

A．familiar B．expensive C．admirable D．precious

小题13:

A．woke up to B．put up with C．got on with D．looked down upon