题目内容
弱酸性染料染羊毛时，可用醋酸调pH值。
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Task 2Listen to the monologue again and fill in the missing words or phrases according to what you hear.[音频]Do you have a 1in your house? What about a 2 for your car? Both of these can help you make 3. Many people who are feeling the pinch are 4what's been called the “5”.Perhaps the 6of a company in this field is Airbnb , an American web business which allows you to 7your spare room to 8. It says it operates in 34,000 cities and it has 800,000 listings of rooms and 9. They seem to have 10the market!
Task 1Listen to the dialogue about bike sharing and decide whether the following statements are true (T) or false (F). The following sentences may help you.[音频]Mike rides a bike to school because of a traffic jam on Monday. ( )
Mobike is a green method of transportation. ( )
Mobike costs one yuan a day. ( )
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