会计凭证按照编制的程序和用途不同，分为______。 A．外来原始凭证和自制原始凭证

中国的汉字非常奇妙，有的字简单明了，有的字却比较复杂，而且往往几个字经过组合后产生出 另一个字，而一个字中说不定还含有其他字。比 如“申”字，里面就藏有24个汉字，请你至少写出10个。

“小时不识月，呼作白玉盘。又疑瑶台镜，飞在青云端。”看到月亮，一个小孩会形象地把它同日常生活中得某些东西联系起来；而一个远离故土的人会以“我寄愁心于明月，随君直到夜郎西”抒发自己的离情别绪。这体现了

①认识活动是主观意识对客观事物的反映和思索 

②认识可以因为对同一个客观对象理解的不同而不同 

③认识对象具有能动的反映特性，是主观与客观的统一 

④认识可以摆脱客观事物的原貌，实现认识对象的创新

A．①②

B．②③

C．①④

D．③④

砂的分计筛余率α₁＝4%，α₂=12%，α₃=17%，α₄=20%，α₅=18%，α₆=29%，则砂的细度模数M_x为（）。

A．2.7

B．2.64

C．2.51

D．2.4

阅读理解。

                                                          The Guitar Player

      One day Tony was crossing the road when he was hit by a car. He fell and broke his arm.

      An ambulance soon arrived and took Tony to a hospital. There a doctor operated on his arm. Then he

put the arm in a cast (石膏). Tony could not move it at all.

      "You must keep your arm in a cast for six weeks," the doctor said. "That will give the broken bone a

chance to heal (愈合)."

      At the end of six weeks Tony went back to the hospital. The doctor cut the cast with a large saw (锯).

Then he took Tony's arm out of the cast.

      "Can you move your arm, Tony?" he asked.

      Tony tried to move his arm. At first it was difficult, but soon he was able to move it a little.

      "Yes, it's fine," he said. "Thank you very much."

      "In a few days it will be as good as new, "the doctor said. Just exercise it a little,"

      "Will I be able to play the guitar?" Tony asked.

      The doctor smiled. "Of course you will," he said. "You'll have no problem."

      "That is good news," Tony said. "Because I couldn't play it at all before."

1. How long did he have to keep his arm in the cast? [ ]

A. About 40 days.

B. A few days.

C. Two weeks.

D. Two months.

2. What did the doctor tell Tony to do after the cast was taken off?[ ]

A. Keep his arm still.

B. Exercise his arm.

C. Play the guitar.

D. Operate on his arm.

3. Why was Tony pleased? [ ]

A. He could play the guitar before he broke his arm.

B. The doctor taught him how to play the guitar.

C. He thought he would now be able to play the guitar.

D. The doctor said he would never play the guitar again.

4. Which statement is NOT true?[ ]

A. It took the broken bone six weeks to heal.

B. The cast was so hard that the doctor had to cut it open with a special tool.

C. Tony liked playing the guitar but he didn't know how to play it.

D. A traffic accident happened to Tony on his way to school.

耐火极限的定义是：建筑构件按时间一温度标准曲线进行耐火试验，从受到火的作用时起，到下列情况为止，这段时间称耐火极限，在下列情况中何者不正确（）

A.失去支持能力

B.完整性被破坏

C.完全破坏

D.失去隔火作用