问题 单项选择题

铅中毒时血涂片中可见()

A.染色质小体

B.球形红细胞

C.碱性点彩红细胞

D.有核红细胞

E.靶形红细胞

答案

参考答案:C

阅读理解

    Near the North Pole(北极)there are only two seasons:winter and summer.In winter,nights are long.For more than two months you can’t see the sun,even at noon.In summer,days are long.For more than two months the sun never sets and there is no night at a11.The temperature(温度)is very low near the North Pole.Even in summer the temperature is below 0℃.So people there wear warm clothes all year round.They make their clothing from the skins of animals.From the skins they also make coats,hats and even boots.

In the cold climate,plants cannot grow.So the people have to build their houses with skins,earth,stone or snow.When they go out to hunt something,they live in tents of skins.When they move,they take their tents with them.Sometimes,they build houses of snow.Now don’t think that these houses must be cold.In fact,they are very warm and safe.

The life near the North Pole is very interesting.

小题1:There are no________near the North Pole.

A.spring or summer

B.summer or autumn

C.autumn or winter

D.spring or autumn小题2:Near the North Pole the winter nights can last_______.

A.more than a month

B.more than two months

C.more than half a year

D.more than four months小题3:The people near the North Pole wear warm clothes_________.

A.only in winter

B.only in summer

C.only at night

D.all year round小题4:Near the North Pole you can’t see__________.

A.animals

B.stone houses

C.plants

D.tents of skins小题5:Sometimes people there build houses of snow.It is__________.

A.warm and safe

B.very cold inside

C.dangerous to live

D.cold and dangerous

单项选择题