用螺旋测微器测细钢丝的直径时，示数如图所示，此示数为______mm．

下列哪一项血液中的蛋白指标的测定不是机体营养状态评定的指标（）。

A.血清白蛋白

B.血清球蛋白

C.血清转铁蛋白

D.血清前白蛋白

E.纤维连接蛋白

患者，男，41岁，PDE示轻度右心室增大，该患者心脏叩诊可见心浊音界

A．向两侧扩大

B．向左侧移位

C．绝对浊音界增大

D．相对浊音界明显增大

E．胸骨右缘第3肋间向外扩大

老年人爱发脾气，情绪低落，是老人缺乏（）。

A、维生素D

B、维生素C

C、维生素B族

D、维生素A

Once a circle lost a piece of its own. The circle wanted to be whole, so it went around looking for its missing piece. But because it was incomplete（不完整的）, it could only roll very slowly. It enjoyed the flowers and the sunshine along the way. It talked with worms. It found lots of different pieces, but none of them fit. So it left them all by the side of the road and kept on looking for the missing piece.

Then one day the circle found a piece that fit perfectly. It put the missing piece into itself. It could be whole, with nothing missing. It was so happy and began to roll. Now that it was a perfect circle, it could roll very fast, too fast to see flowers or talk to worms. It realized how different the world was when it rolled so quickly. It felt so sad that it stopped, left its found piece by the side of the road and rolled away slowly.

Sometimes we are perfect when we lost something. A man who has everything is a poor man in some ways. He will never have hopes, dreams or something better. He will never know someone is loving him or someone is giving him something he has always wanted or never had.

We couldn’t be perfect, but we must be brave enough to love, strong enough to forgive, kind enough to share happiness with others and clever enough to know there is enough love around us and then we can always live a wonderful time in our lives.

小题1:The circle rolled very slowly because it __________.

A．spent much time talking to worms

B．wanted to enjoy the sunshine

C．was looking for its missing piece

D．lost a piece of its own小题2:After it was whole again and rolled fast, the circle __________.

A．felt unhappy

B．could see more beautiful flowers

C．could talk to any worm

D．could go everywhere小题3:If a man owns everything, he’ll be __________ in some ways.

A．perfect

B．poor

C．happy

D．strong enough小题4:The story mainly tells us that __________

A．nobody loves us if we give nothing

B．a man who has everything is the happiest

C．losing something may not be a bad thing sometimes

D．we are not whole when we lose something

兴安国家森林公园，以交山植物观赏为主，野生动物驯养为辅，请问其面积是多少？木本、草本植物种？野生动物种？