药材龙胆根横切面最外层的保护组织是（） A.表皮 B.皮层 C.下皮层

产妇王女士，33岁，于近日正常顺产一女婴。

提示：在出生后第三天产妇发现新生儿轻度黄染。提问：关于正常黄染的消退时间为（）。

A.4～6天

B.7～10天

C.8～12天

D.10～14天

E.10～16天

Christmas Eve means a warm get-together with friends, a candlelight dinner, or perhaps a celebration at a pub(酒馆) for students. But, for Cai Yingjie, the night has a different meaning: helping beggars(乞丐) and the homeless(people without homes).

Cai, who is a student in journalism at Tsinghua, could be found at Beijing’s Wudaokou Light Railway Station that special evening. When she saw an old beggar, she took the cold, rough hands of the woman with her warm, clean hands, and gave   the woman some warm bread and helped her put on a pair of new gloves(手套).

The woman was surprised for a few seconds, then burst into tears, saying “for  the first time I feel respected(尊重)”.

Cai said, “A beggar’s life is very hard. That’s why I want to help them.”

Cai was one of 14 Tsinghua students spending Christmas Eve among the poor. They walked in the cold wind along the streets from 4 to 7 pm on Friday, visiting 15 beggars in Beijing’s Haidian District.

They brought bread and gloves with them, and stopped to greet beggars and offer them some of the warm food. Each beggar greeted them with a look of surprise.

“I know the activity can’t help much, but it’s meant to show our respect and   care for beggars and the homeless who have been neglected for so long,” said Sun,  head of the group. “And Christmas is a good time for that.”

小题1:What does Christmas Eve mean to the 14 Tsinghua students?

A．Taking 15 beggars to Tsinghua.

B．Getting together with friends.

C．Showing care to the beggars and the homeless.

D．Selling bread and gloves to the beggars.小题2:What does the beggar mean by saying “for the first time I feel respected”?

A．The beggar has been waiting for Cai for long.

B．The beggar hasn’t been shown care for so long.

C．The beggar has been respecting Cai for a long time.

D．This is the first time the beggar has seen Tsinghua students.小题3:What did each beggar feel when they received greetings?

A．Sad.

B．Amazed.

C．Frightened.

D． Proud.小题4: The word “neglected” in the last passage means _______.

A．protected

B．found

C．taken care of

D．given no enough care

图1中结构1杆、2杆轴力为（）。

A．N₁压力，N₂拉力

B．N₁N₂＜0

C．N₁拉力，N₂拉力

D．N₁=N₂=0

职业信誉是职业责任和职业良心的价值和尺度，包括对职业行为的社会价值所作出的客观评价和正确的认识。

某硫化铜矿浮选厂，已知原矿品位α=1.23％Cu，精矿品位β=22.18％Cu，尾矿品位δ=0.04％Cu，求铜精矿产率γ_k回收率ε_k富矿比？