人工后牙颊舌径应比天然牙的颊舌径（）。 A．相等 B．大1/3 C．稍大 D．稍小

Do you know about Liu Xiang? He is one of the most popular   1  stars in China.

Liu Xiang was born on July 13, 1983 in Shanghai. Like many other Olympic sports stars, he started training when he was very   2 . In Grade Four, he went to the Junior Sports School of Putuo District of Shanghai.   3 , he was trained as a high jumper. Then, in 1998, his coach noticed his skill in hurdling(跨栏).

Liu Xiang put his whole heart into his training.   4  the age of 18, Liu Xiang set a record. In 2002 he won his first international   5  hurdles in Switzerland, and in the same year, he   6   a gold medal at the Asian Games in Korea. In 2004, Liu Xiang won the   7  Olympic gold medal in Athens, Greece. In 2006, he set a new world record with a time of 12.88 seconds in the men’s 110m hurdles in Lausanne.

  8  a sporting hero, Liu Xiang is invited to competitions around the world. And he also appears(出现) in advertisements and films. So what’s next for Liu Xiang? Will he   9  more time away from sports? No, Liu Xiang will go for more medals for China   10   he’s a symbol of China’s international sporting success.

小题1:A. movie           B. sports         C. music

小题2:A. old             B. short           C. young

小题3:A. At first        B. At last          C. Next

小题4:A. On             B. In              C. At

小题5:A. 100m            B. 110m             C. 120m

小题6:A. won             B. made             C. kept

小题7:A. third           B. first            C. second

小题8:A. Like          B. For             C. As

小题9:A. pay             B. spend            C. need

小题10:A. because        B. but              C. although

货物或者服务项目采取邀请招标方式采购的，采购人应当从符合相应资格条件的供应商中，通过随机方式选择( )家以上的供应商，并向其发出投标邀请书。

A．2

B．3

C．5

D．10

自动空气开关的短路保护功能，由其内部的（）器件完成。

A.过电流电磁脱扣器

B.过电压电磁脱扣器

C.热驱动

D.熔断器

粉砂岩的力度范围为（）？

A.2-0.01mm

B.0.1-0.01mm

C.2-0.1mm

D.0.1-1mm

瞿麦具有的功效是（）

A.利水渗湿，健脾止泻

B.利尿通淋，渗湿止泻

C.化湿行气，温中止泻

D.清热解毒，燥湿止泻

E.利水通淋，通经活血