下面哪一部著作被誉为“群经之首，大道之源”：（）A、《易经》B、《诗经》C、《道德经

“Who needs a shopping mall if you have Taobao?” said Wang Lin, 28, a writer in Beijing.

Taobao, China’s largest online shopping site, has become an important part of Wang Lin’s life. She spends lots of money on Taobao.

A growing number of Chinese Internet users like Wang Lin have found the joys of online shopping. Most online shoppers are students or young people. More women shop online than men. Clothing and home-use products (产品)are the most popular online.

It was reported that more than 250 billion yuan was spent on online shopping last year, 80% through Taobao.

Taobao means “looking for treasure” in Chinese. People can find almost everything they need on Taobao, from clothes to books, from candies to DVD players.

You may question the security(安全)of online shopping, Wang Lin said, “It’s very safe and convenient. Unless(除非) you receive the products from the sellers and are satisfied with them, the shop owner will not get the money. You can also get your money back if you want to return the products.”

小题1:What products are the most popular online?

A．Candies and DVD players.

B．Treasure products.

C．Clothing and home-use products.

D．Clothes and books.小题2:Taobao is______.

A．a shopping mall

B．an online shopping site

C．an online shopper

D．the China’s largest website小题3:In the last paragraph, the underlined word “them” refers to “______”.

A．shop owners

B．products

C．sellers

D．online shops小题4:Which is the best title of the passage?

A．Wang Lin’s life

B．Shopping online is not safe

C．China’s online shoppers

D．Online shopping in China

按规定对房产租金收入要计算房产税，其适用的税率是（）。

A.1.2%

B.12%

C.10%

D.20%

下列结构既是气体的通道又是食物的通道的是（　　）

A．口腔

B．咽

C．喉

D．气管

线性回归模型中，解释变量是原因，被解释变量是结果。