问题 读图填空题

下图为人体消化系统模式图,请根据图回答下列问题。  

(1)最大的消化腺是[ ]       ,它能分泌      ,促进        被消化。

(2)位于消化道外的消化腺是[ ]      ,[ ]       ,[ ]       ;分布于消化道壁上的消化腺是                。消化腺所分泌的消化液中含有淀粉酶。

(3)消化道中最膨大的部分是[ ]      

(4)消化食物吸收营养物质的主要场所是[ ]         ,它长       米。

(5)某人患急性阑尾炎,需开刀切除的部位是[ ]          

(6)淀粉开始消化的部位是[ ]          ;蛋白质开始消化的部位是[ ]   __   ;脂肪开始消化的部位是[ ]  __    

答案

(1)[10]肝脏;胆汁;脂肪  

(2)[8]唾液腺;[10]肝脏;[4]胰腺;[3]胃腺;[6]肠腺  

(3)[3]胃  

(4)[6]小肠;5-7  

(5)[14]阑尾  

(6)[1]口腔;[3]胃;[6]小肠

单项选择题

In 1998 consumers could purchase virtually anything over the Internet. Books, compact discs, and even stocks were (1) from World Wide Websites that seemed to (2) almost daily a few years earlier, some people had predicted that consuners accustomed to shopping in stores would be (3) to buy things that they could not see or touch (4) . For a growing number of time-starved consumers, however, shopping from their home computer was proving to be a convenient (5) to driving to the store.

A research estimated that in 1998 US consumers could purchase $ 7.3 billion of goods over the Internet, double the 1997 total. Finding a bargain was getting easier, (6) the rise of online auctions and Websites that did comparison shopping on the Internet for the best (7) .

For all the consumer interest, (8) in eyberspaee was still a largely (9) business, however. Internet pioneer Amazon. eom, which began selling books in 1995 and later (10) into recorded music and videos, posted (11) of $ 153.7 million in the third quarter, up from $ 37.9 million in the same period of 1997. Overall, (12) , the company’ s loss widened to $ 45.2 million from $9.6 million, and analysts did not expect the company to turn a profit (13) 2001. (14) the great loss, Amazon. tom had a stock market value of many billions, reflecting investors’ (15) about the future of the industry.

Internet retailing appealed (16) investors because it provided an efficient means for reaching millions of consumers without having the cost of operating (17) stores with their armies of salespeople. Selling online carried its own risks, however, (18) so many companies competing tor consumers’ attention, price competition was (19) and profit (20) thin or nonexistent.

13()

A.in

B.by

C.after

D.until

判断题