防佝偻病，为婴儿服用维生素D应至（） A.5个月 B.3岁 C.7岁 D

先阅读短文,在其后空白处写出各单词的正确形式,单词的首字母已给出。

Once I went shopping on my first visit to Macao. Coming from cold and cloudy England, I enjoyed the sun and dressed in a T-shirt and a short skirt. Not having much c_____小题1: to enjoy the sun in England, my legs were very white. In England this is not a fashionable look at all . Most women spend every sunny day out t_____小题2: to get darker skin(皮肤). The darker the skin, the better the look. I have tried to get darker but nothing w____小题3: for me!

As I walked around one shop, the two shop assistants kept looking at my legs all the time, talking q_____小题4:to each other in Chinese. I began to feel u____小题5:and  asked my friend if we could leave. After we left the shop, she asked me what was wrong . I c____小题6:about the shop assistants being very impolite . They must be talking about my white skin. My friend laughed. “They weren’t laughing at you. They were saying how nice your legs were. Many Chinese women want to have white skin like yours. In fact, there are many beauty products(美容产品)  in the shops to make skin whiter and a lot of money is s_____小题7: on them.”

It just s____小题8: that we are never happy with what we have. The grass is much g______小题9:on the other side. If the women of the West and East thought the s_____小题10:way, Western women wouldn’t spend so much money on beauty products that makes skin darker and women from the East wouldn’t need to use cream that makes skin whiter.

胰岛素发挥作用的第一步是( )

A．促进葡萄糖吸收利用

B．与靶细胞表面受体结合

C．促进胰高血糖素的分泌

D．抑制糖异生

E．促进糖原合成

全过程的质量管理必须体现两个思想，第一（）的思想，第二（）的思想

对于原子吸收分光光度计，目前计算机不能完成的控制是（）。

A.制样

B.选光源

C.选波长和狭缝

D.进样装置控制

培育猪种和从国外引进猪种一般在（）月龄、体重65-75千克时才出现性成熟。

A、4-5

B、5-6

C、6-7

D、7-8