下列哪种研究方法不属于描述性研究A．病例报告B．横断面研究C．_爱下问搜题

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问题单项选择题

下列哪种研究方法不属于描述性研究

A．病例报告
B．横断面研究
C．病例—对照研究
D．生态学研究
E．纵向研究

答案

参考答案：C

完形填空

When I was little, my mother began selling flowers in Camden Market. She couldn’t 36 me at home on my own,   37 I had to go to the market with her.
38 , I didn’t have to do anything. I just sat there, and my mother told me jokes and stories so I didn’t get   39 .When I got older, I gave my mother a hand and I really enjoyed it.
Then one year, my grandma gave me a book for Christmas. It was all about making candles and I loved it. I was 14, and I didn’t have to go to the market 40 because my mother could leave me at home on my own. I 41 my free time making candles of all shapes and sizes. I made 42 them.
One day, my mother was ill, so I had to go to the market on my own. I decided to 43 some candles with me and see 44 I could sell them. They 45 in 20 minutes! The next week, my mother gave me some money to buy some wax (蜡) to make more candles. They were sold out really quickly, too.
Ten months later, we decided 46 flowers. My mother and I couldn’t make enough candles during the week, so some of my friends started to help us. I paid them one pound 47 every candle, and we   48 sell them for three or four times. It was fun and my friends worked with me in the market.
At the age of 22, my uncle 49 me some money and I opened my first shop in Portobello Road. Since then, I’ve 50 looked back, even in difficulties. In the first store, we only sold candles, but now we sell everything from the designer, furniture to paintings. Oh, and candles, of course.

A．To begin with

B．To begin to

C．To start to

A．hundreds of

C．were sold out

A．stop selling

B．to stop selling

C．to stop to selling

D．to stop to sell

A．are used for

C．are used to

多项选择题

微波干燥养护法的优点是()

A．干燥迅速

B．产品质量好

C．加热均匀

D．热效率高

E．反应灵敏