“绿色能源”是当今人类理想的能源．下列不属于“绿色能源”的是（ ） A．天然气

58-（12+8）应先算（    ），后算（    ）。

氢原子的能级如图所示．有一群处于n＝4能级的氢原子，这群氢原子能发出________种谱线，发出的光子照射某金属能产生光电效应，则该金属的逸出功应小于________eV．

词汇运用 用所给词的适当形式填空（共15小题；每小题1分，满分15分）

小题1:It’s cold outside, you should keep the door __________________ . (close)

小题2:Now most families have at __________________ one TV. (little)

小题3:Sandwich got its name from a man __________________ John Montagu. (call)

小题4:I’m frightened of __________________ by plane. (travel)

小题5:What  __________________ to you just now? (happen)

小题6:Thank you for  __________________ to me. (write )

小题7:I found it easy  __________________ English well. (learn)

小题8:The following Saturday, we  __________________ the great museum. (visit)

小题9:Listen! Someone  __________________ Beijing Opera in the next room. (sing)

小题10:How __________________! The rabbit jumped down a big tree. (amaze)

小题11:She learned English all by  __________________ last year(she)

小题12:Alice saw a white camel  __________________ by. (pass)

小题13:The pet was small enough __________________ through the door. (go)

小题14:On Sunday doors in our school were all  __________________ (lock)

小题15:Yesterday, after she drank some water, she __________________ a little ill. (feel)

神经元胞质或核内出现包涵体的原因是（）

A.病毒感染

B.细菌感染

C.真菌感染

D.放线菌感染

E.螺旋体感染

结合实际论述领导效能测评的原则。