关于排尿反射的叙述，正确的是（） A.感受器主要在 * * B.初级中枢位于脑干 C.传

根据下列各句句意及所给单词的首字母或汉语提示，用正确形式的单词填空。并把完整单词填写在答题卷相应的位置上。

小题1:It is certain that Kong Xiangdong's talent for music is __________ (非凡的). He has performed in more than 40 countries and has scored numerous prizes, including the 1st prize and four other special prizes at the 1992 Sydney International Competition of Australia.

小题2:Illegal __________ (移民) should be sent back to their own countries.

小题3:The __________ (美丽)  of Venice consists largely in the style of its ancient buildings. 

小题4:We raised money for the ____________ (目的) of helping the children in poor areas.

小题5:During the 3-hour concert, Morissette used a lot of material from her __________ (获奖的) album “Jagged Little Pill”.

小题6:Everyone’s fingerprints are u_________, which can make it easier for police to find criminals.

小题7:Martin Luther King’s emotional speech reduced many of the a__________ to tears. 

小题8:Who is the lady dressed e__________ in the painting drawn by Chen Yifei?

小题9:Different a__________ have their own opinions of building a skyscraper.

小题10:On the roof of the Post Office Savings Bank building in Budapest, there are fantastic decorations r___________ waves, flowers, and angels.

测定滑轮组的机械效率．选用的滑轮每个重0.6N，每个钩码重2N，弹簧测力计的最大量程为2.5N．现挂3个钩码：

（1）要完成此实验最少需 ______个定滑轮，______个动滑轮．

（2）画出实验装置图．

（3）绳子自由端的拉力至少为 ______N．

（4）在实验中 ______拉动绳子时，弹簧测力计示数为2.5N，钩码升高10cm，则有用功为 ______J，总功为 ______J，机械效率为 ______．

（5）在实验中若被提升的物体重力一定，则适当 ______（填“增加”或“减小”）动滑轮个数，就越省力．滑轮组的机械效率就越 ______．

慢性呼衰，给氧原则是（）

A.持续高流量

B.持续低流量吸氧

C.间断低流量

D.先高流量待动脉氧饱和度恢复正常改为低流量

E.间断高流量

男，32岁，胸骨左缘第3肋间典型舒张早期杂音，可考虑主动脉瓣关闭不全的诊断，应与肺动脉瓣关闭不全舒张早期吹风样杂音（GrahamStell杂音）相鉴别。更支持前者的是（）

A.杂音在胸骨左缘第2肋间最响

B.左室增大

C.吸气末杂音更显著

D.没有血压改变

E.常伴有第一心音增强

构建真核细胞表达载体时不需要的顺式元件是（）。

A、启动子

B、筛选标记

C、SD序列

D、加尾信号

E、增强子