符合血细胞从原始到成熟发育过程形态演变规律的是（） A.核浆比例由小到大 B.核仁从

根据短文内容判断下列句子的正误，正确的用“A”，错误的用“B”。

       Eleven-year-old Anna got a serious illness. All the doctors in the hospital thought she would spend

the rest of her life in the wheelchair. But Anna never gave up the hope of becoming healthy. Lying in her

bed in the hospital, she told everyone that she would walk again someday.

       All the doctors in the hospital were moved by her. They taught her to imagine(想象)seeing herself

walking.  And Anna worked hard to imagine that she was still moving, moving and moving!

       One day, while she was imagining her legs moving again, suddenly, the bed moved! It began to move around the room! She shouted out," Look at what I'm doing!  Look! I can move!"Actually,  that was only an earthquake. But Anna didn't think so. She thought that she could do it．

       Now, she comes back to school again. Many people couldn't believe it. We all know in all things it

is better to hope than to despair.

( )1. Anna would die soon because she got a serious illness.

( )2. She didn't think she would spend the rest of her life in the wheelchair.

( )3. Many doctors saw Anna moving in the hospital every day.

( )4. On that day, the bed moved and she could move again.

( )5. We can learn from the passage that we should not despair in all things.

据记载，在古代雅典法庭上经常会聘请职业答辩家撰稿，被告往往携带家眷，上演一场场哭戏，声泪俱下，试图激起法庭的恻隐之心。申诉之后，陪审法官经常未经正式答辩，便将圆盘投入标明为“有罪”或“无罪”的瓮中，直接表决。材料说明雅典

①陪审法庭是雅典司法机关②法庭判决不是依靠证据而是仅凭情感

③法庭审判聘请律师已成惯例④法官审案具有很大的随意性和主观性[ ]

A．①②③④

B．①③④

C．②③④

D．①②

已知氢、钠、碳、氧元素的化合价分别为+1、+1、+4、-2价，可以写出它们之间组成化合物的化学式的个数是[ ]

A．5

B．6

C．7

D．8

患人畜共患传染病的牲畜，无论病情程度如何，肉尸绝对禁止食用的是（）。

A.猪丹毒

B.布氏杆菌病

C.结核病

D.口蹄疫

E.炭疽病

窄轨轨道对轨缝的要求是：地面轨道轨缝夏季不大于（），冬季不大于10mm，无三处以上连续瞎缝；井下直道不大于（），弯道不大于（）。

A.7mm

B.10mm

C.5mm

D.8mm