问题
填空题
给音节标声调。
(xiao he)小河 (xue xiao)学校 (xiao yuan)校园 (fei ji)飞机
答案
xiǎo hé xué xiào xiào yuán fēi jī
给音节标声调。
(xiao he)小河 (xue xiao)学校 (xiao yuan)校园 (fei ji)飞机
xiǎo hé xué xiào xiào yuán fēi jī
选词填空。 | |
2. One ______ not ______ cross the street against the traffic rules. 3. The workers are doing all they can to ______ the accident rate. 4. She ______ because she was on a diet. 5. He is heavily ______. 6. I'll see the film ______. 7. The teacher ______ by teaching. 8. Tom was very angry and ______ me. 9. She ______ a lot of ______ last winter. 10. Don't ______ when you are late for school. |
已知某盐在不同温度下的溶解度如下表所示,若把溶质的质量分数为22%的该盐溶液由50℃逐渐冷却,则开始析出晶体的温度范围是( )
温度(℃) | 0 | 10 | 20 | 30 | 40 |
溶解度(g) | 11.5 | 15.1 | 19.4 | 24.4 | 37.6 |
A.30℃-40℃
B.20℃-30℃
C.10℃-20℃
D.0℃-10℃