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问题 单项选择题 A1型题

主食强化需要在精白米面中强化，所用强化剂有铁、钙、赖氨酸、叶酸、（）等

A.维生素B1、B2

B.维生素D

C.维生素C

D.维生素K

E.维生素E

答案

参考答案：A

阅读理解

When you visit Taiwan，Green Island is a wonderful place not to be missed.

Green Island，with clear blue water around it，is an island in the Pacific Ocean,33 kilometers east of Taitung. The old name for Green Island was Huoshandao，meaning “fireburning island”. The island got its name because people on the island used to set up fires at night to help people who went fishing home. Another story goes that in the Qing Dynasty there was a fire and most of the island’s trees and grass died. The coastline(海岸) of the island is only 20 kilometers long，the tallest mountain is only 281 meters high and the island is only 15 km2，but it is attracting(吸引) a growing number of tourists.

Green Island has a lot of interests that make it a place where people like to go：seaside，a clean white beach，green grasslands，seawater，hot springs，beautiful undersea sights，and a great many plants and animals. Another thing of Green Island that people are interested in is its rocks in different shapes. “Sleeping Beauty” and “Pekinese Dog” are the two most strangely shaped ones. There are also other interests which one cannot miss. The green hills，blue sea，clear sky，and ocean gentle winds make a “must” for you.

小题1:From the article we know Green Island is ________.

A．very large

B．281 meters long

C．in the Indian Ocean

D．33 kilometers from Taitung小题2:According to the two stories，people on Green Island used to ________.

A．meet a lot of visitors

B．set fires to get warm

C．make a living by fishing

D．cut down too many trees and grass小题3: The sight “Pekinese Dog” is ________ on Green Island.

A．a cute living dog

B．a rock like a dog

C．a dog­shaped plant

D．a dog of “Sleeping Beauty”小题4:The last passage is mainly about the ________ of Green Island.

A．sights

B．history

C．people

D．culture
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单项选择题

如外源性化合物A的LD50比B大，说明

A．A引起实验动物死亡的剂量比B大

B．A的毒性比B大

C．A的作用强度比B小

D．A的急性毒性比B小

E．A引起死亡的可能性比B小
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