人体发育的起点是( ) A.卵细胞 B.婴儿 C.受精卵 D.胚胎

题型:选择题

问题:

人体发育的起点是(  )

A.卵细胞

B.婴儿

C.受精卵

D.胚胎

考点:人的生殖过程与发育
题型:选择题

根据下面的思路,合理展开叙述,组成80字左右的语段。

夏天和冬天,各有各的情趣。

答:_____________________________________________________

题型:选择题

木质化细胞壁

A.加间苯三酚和盐酸试液,显红色或紫红色

B.加碘液显棕黄色,加硝酸汞显砖红色

C.加碘液显蓝色或紫色

D.加氯化锌碘显蓝色或紫色

E.加硫酸无变化

题型:选择题

It was Thanksgiving morning. I was busy preparing the traditional Thanksgiving turkey when the doorbell rang. I opened the front door and saw two small children in rags huddling together on the top step.

“Any old papers, lady?” asked one of them.

I was busy. I wanted to say “no” until I looked down at their feet. They were wearing thin little sandals (凉鞋), wet with heavy snow.

“Come in and I’ll make you a cup of hot cocoa.”

They walked over and sat down at the table. Their wet sandals left marks upon the floor. I saved them cocoa and bread to fight against the cold outside. Then I went back to the kitchen and started cooking.

The silence in the front room struck me. I looked in. The girl held the empty cup in her hands, looking at it. The boy asked in a flat voice, “Lady, are you rich?”

“Am I rich? Pity, no!”

I looked at my worn-out slipcovers (椅套). The girl put her cup back in its saucer (茶碟)carefully and said, “Your cups match your saucers.” They left after that, holding their papers against the wind. They had reminded me that I had so much for which to be grateful.

Plain blue china cups and saucers were only worth five pence. But they matched.

I tasted the potatoes and stirred the meat soup. Potatoes and brown meat soup, a roof over our heads, my man with a regular job, these matched, too.

I moved the chairs back from the fire and cleaned the living room. The muddy marks of little sandals were still wet upon my floor. Let them be for a while, I thought, just in case I should begin to forget how rich I am.

小题1:The writer let the two children come in and served them well because ______.

A.she wanted to sell old papers to them

B.she wanted to give them some presents

C.she showed great pity and care on them

D.she wanted to show her thanks to them小题2:The writer left the muddy marks of little sandals on the floor for a while to _______.

A.show that she was a kind-hearted lady

B.remind her she shouldn’t forget how rich she was

C.leave room for readers to think about what being rich is

D.call up her memories of the good old days小题3:It can be inferred from the text that whether you are rich depends on _______.

A.how much money you have made

B.what attitude you have had toward life

C.the way you help others

D.your social relationship

题型:选择题

[复合型非选择题]女性,40岁,3年前双手指关节肿痛,经对症治疗后症状缓解,以后虽有关节痛,但不影响正常工作。2个月前无明显诱因发热(38℃左右),感乏力、气短,咳嗽不明显。查体:双手中指近指关节梭形肿胀,双腕功能略差,有压痛。右肘关节不能完全伸直,伸面有一个1.0cm×1.5cm皮下结节,无压痛。胸片示左侧胸腔中等量积液,肺纹理稍粗,血沉67mm(第1小时末),CRP增高,RF高滴度阳性

本患者的首选治疗方案()

A.异烟肼+利福平+乙胺丁醇

B.青霉胺+阿司匹林

C.肾上腺皮质激素

D.肾上腺皮质激素+甲氨蝶呤

E.非甾体类抗炎药

题型:选择题

铸铁焊接工艺中的“加热减应”是在(),另外用焊矩对焊件已选定的部位加热,以减少焊接应力和变形。

A、焊补前

B、焊补中断时

C、焊补时

D、焊补后

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