城市规划规定了某宗土地为居住用途，而从该宗土地的位置、周围环境等来看适合作为商业用途

擦洗棉布上的陈旧血渍应用（）

A.乙醇

B.草酸

C.过氧乙酸

D.漂白粉澄清液

E.过氧化氢

一个小灯泡上标有“6V 3.6W”字样，则该灯泡正常发光时的电阻为_________ Ω，现将其接在9V的电路中，要求仍正常发光，则应_________ 联一个阻值为___________ Ω的电阻。

Homer征表现不正确的是（）

A.瞳孔缩小

B.眼睑膜充血及面部无汗

C.眼裂狭小

D.眼球内陷

E.瞳孔对光反应消失

Zheng He (1371-1435), or Cheng Ho, is arguably（可论证地） China’s most famous navigator. Starting from the beginning of the 15th Century, he traveled to the West seven times. In 28 years, he traveled more than 50,000km and visited over 30 countries, including Singapore. Zheng He died in the tenth year of the reign（统治） of the Ming emperor Xuande (1435) and was buried in the southern suburbs of Bull’s Head Hill (Niushou) in Nanjing.

In 1985, during the 580th anniversary（周年纪念） of Zheng He’s voyage, his tomb（坟墓） was rebuilt. The new tomb was built on the site of the original tomb in Nanjing and reconstructed according to the customs of Islamic teachings, as Zheng He was a Muslim.

At the entrance to the tomb is a Ming-style building, which was a memorial hall. Inside are paintings of the man himself and his navigation maps. To get to the tomb, there are newly laid stone platforms and steps. The stairway consists of 28 stone steps that are divided into four sections with each section having seven steps. This represents Zheng He’s seven journeys to the West. The Arabic words which mean “Allah (God) is great” are written on top of the tomb.

Zheng He built many wooden ships, some of which are the largest in history, in Nanjing. Three of the shipyards still exist today.

56. Zheng He’s tomb was rebuilt ________.

A. because he was a Muslim           B. following the Islamic customs

C. to celebrate Zheng’s 580th birthday   D. beside the original one

57. You can see _____ at Zheng He’s tomb.

A. a Ming-style hall in the tomb           B. ZhengHe’s portraits and his maps for his voyage

C. Arabic-style buildings and materials      D. four flights of 28 stone steps

58. The passage mainly tells us ______.

A. how ZhengHe built his ships             B. something about his tomb

C. that ZhengHe was a Muslim navigator      D. about ZhengHe, his voyages and his tomb

WHO龋病流行程度评价标准是

A．龋齿发病率
B．患龋率
C．龋均
D．龋面均
E．无龋率