Bill is not a fast runner and he doesn't have a chance of winning the marathon, but he will _____ the race even if he finishes last. A. keep on B. keep to C. stick out D. stick to 答案:C 解析: stick out(=keep on doing sth。until it is done,no matter how long,hard,or unpleasant) 坚持下去: Mathematics is hard,but if you stick it out you will understanding it(=Mathematics is hard,but if you keep on working hard at it you will learn it.) 此外,stick on 还可表示 (stand out) 突出: The skyscraper sticks out against the bkue sky.(这幢摩 天大楼映着蓝图小华根据下列表中的数据,得出以下四个结论,其中正确的是
物质
熔点/℃
(在标准大气压下)
物质
比热容
c/[J×(kg×℃)-1]
冰
0
水
4.2×103
锡
232
酒精
2.4×103
铅
328
冰
2.1×103
铝
660
铝
0.88×103
铜
1083
铜
0.39×103
A.用来熔化铅的器皿可以用锡制作
B.用水作为汽车发动机散热器的冷却剂,其重要原因之一是水的比热容较大
C.质量相等的铝块和铜块,吸收相等热量,铝块温度升高得较多
D.质量相等的水和冰块,降低相同的温度,水放出的热量是冰块的2倍