问题 填空题

图中,物体的长度是     cm.

答案

(3) 2.00

题目分析:长度测量读数时需弄清刻度尺的分度值、被测物体的端点是否与刻度尺的零刻度线对齐、在分度值即精度下再估读一位.观图知刻度尺分度值是1mm,由图可知A物体的长度为5.00cm﹣3.00cm=2.00cm

选择题
阅读理解

Bolivia has a population three and a half million . About one tenth of the total population are white ; one-fourth are mixed Indians and white ; and more than half are full-blooded Indians . The government and the industries are under the control of the white people .

The Indians today live in much the same way as their ancestors . Most of them are farmers . Many work in the mines , for mining is the most important industry on Bolivia’s . Of all the mining products , tin is the most important , which makes up three-fourths of all Bolivia’s exports . The eastern slopes of the Andes , since there are very few roads there , are fertile but not highly developed . The two primary means of transportation are river boats and porters . East of the hill region are the great plains where tropical plants are grown . A serious problem for Bolivia is the transport of food from the warm regions , where it is grown to the mountainous regions , where most of the people live .

Bolivia gained its independence from Spain about a hundred years ago . It has been slow in developing , but its rich resources promise a better future in it .

小题1:The majority of the Bolivian population are        .

A.full-blooded Indians

B.mixed Indian and white

C.white citizens

D.all whites and mixed-blooded people小题2:The Indian’s way of life today is       

A.quite different from that of their ancestors

B.quite interesting

C.almost the same as their ancestors’

D.very exciting小题3:The main product Bolivia exports is       

A.tropical plants

B.gold and silver

C.tin

D.food小题4:Bolivia has been slow in developing , but it has hope for a better future because of its        .

A.mining products

B.rich resources

C.independence from Spain

D.two primary means of transportation