中熔合金的熔点是
A.300℃B.700℃C.900℃D.1 100℃以上E.500~1 000℃
参考答案:E
图说历史(8分)
(1)上图反映的是什么时间的什么重大事件?(2分)
(2)上图反映的历史事件的意义是什么?(6分)
With pressure from life and work increasing day by day, there should be something for people to ______.[ ]
A. make fun of
B. have fun with
C. play tricks on
D. have for fun