题目

如图是甲、乙、丙三种固体物质 (均不含结晶水 )的溶解度曲线，回答下列问题： (1)t1 ℃时，甲物质的溶解度 _______ (填 “>”“<”或 “=”)丙物质的溶解度： (2)将丙的不饱和溶液变为饱和溶液的方法是 _______ (任写一种 )； (3)t2 ℃时，将一定质量的甲物质加入到 100g水中完全溶解，再降温到 t1 ℃，析出甲物质 15g，则 t2 ℃时，加入甲物质的质量为 _______。 (4)将 t3 ℃时甲、乙、丙三种物质的饱和溶液降温到 t1 ℃，所得溶液中溶质的质单词拼写。(每题0.5分，共5分)A. 根据首字母写出正确的单词1. You must ask for p__________ before taking pictures in the church.2. The new credit cards will be of great b___________ to both sellers and buyers.3. It wasn’t your f___________. You needn’t apologize to you.4. The job is not tiring at all. On the c____________, it’s very relaxing.5. Smoking m___________ the risk of heart attacks and other health problems.B. 根据汉语提示用正确的单词填空6. She seems ____________ (真诚的) ，but I still don’t know whether I should trust her.7. Bob earned his ___________(船费) on an English boat when he traveled to China.8. Bill was doing a lot of physical exercise to build up his ________________(力量)9. Eating too many desserts can be ____________(有害的) to one’s teeth.10.Sometimes,the band may play to ____________(过路人) in the streets or subway.