用“√”给下面加粗字选择正确读音。 崇高（cóng chóng ）隐藏（yǐn

B The Ancient Olympic Games古代奥林匹克运动会
According to historical records，the first (1) Olympic Games can be traced back to 776 BC.They (2) dedicated to the Olympian gods and were staged on the (3) plains of Olympia.They continued for nearly 12 centuries， (4) Emperor Theodosius decreed in 393 A.D.that aU such"pagan cults" (5) banned.
The oldest myth which concerns the beginning of the (6) Games is that of Idaios Daktylos Herakles.According to other (7) ，Zeus，the father of humanity，fought and defeated Cronus in a (8) for the throne of the gods.Finally，the well-known (9) Herakles is mentioned who staged games in Olympia in honour (10) Zeus,because the latter had helped him conquer Elis when (11) went to war against Augeas.
Through the 12 centuries of (12) Olympic Games，many wonderful athletes competed in the stadium and (13) hippodrome of ancient Olympia’s sacred area，moving the crowds with (14) great achievements.Although mortal，their Olympic victories immortalised them.Of (15) best athletes who left their mark on the sacred vallev (16) Olympia，some surpassed all limits and became legends by winning (17) successive Olympic Games and remaining at the forefront of their (18) for more than a decade.
The ancient Olympic Games were (19) a one.day event until 684 BC.when they were extended (20) three days.In the 5th century B.C.，the Games were extended again to cover five days.

转化炉烧嘴燃烧最好的火焰颜色是（）。

A．黄中带红点

B．蓝中带小红点

C．蓝白色

D．橙黄色

句型转换。

1.  If it is possible,you can tum to him for help.

   ___________ __________,you can tum to him for help.

2. If they were here now,they could help us.

  _________ ____________ _____________ now,they could help us.

3. Because he was ill,he didn't attend the meeting.

  ________ __________,he didn't attend the meeting.

4. That is the naughty boy. We talked about him last week.

    That is the naughty boy _______ __________ __________ last week.

5. The exhibition is more interesting than it was expected.

    The exhibition is more interesting __________ ____________ .

试述放射性核素治疗原理和应用概况。

拣选式工艺又称（）。

A、摘果式

B、播种式

C、分货式