问题
选择题
对于生活中的常见物质：①食醋、②肥皂水（肥皂水可治疗蚊虫叮咬，蚊虫在体内会留下蚁 酸）、③食盐水，按它们的pH由小到大排列的是 [ ]
A．①③②
B．①②③
C．②③①
D．③①②
答案
答案：A
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对于生活中的常见物质：①食醋、②肥皂水（肥皂水可治疗蚊虫叮咬，蚊虫在体内会留下蚁 酸）、③食盐水，按它们的pH由小到大排列的是 [ ]
A．①③②
B．①②③
C．②③①
D．③①②
答案：A
| 完形填空。 Hector is always busy at work. But next month he is l a long vacation. He is going to China 2 his sister. They are going to the Great Wall and the Palace Museum. They are staying there for 3 two weeks. They have some Chinese friends there, 4 they are also visiting them. Then they're going to Hangzhou to have a 5 the West Lake. They're going sightseeing and 6 the beautiful gardens there. They are planning to stay for a week. 7 they are going to Mount Tai in Shandong. They are going hiking in the 8 . Five or six days later they'll 9 to New York. Then they will l0 go on with the busy work. | ||||
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