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三、阅读理解
Mr. and Mrs. Jones were going on their vacation with their children, and they must arrive at the airport before 11:40 the next morning. “It takes us thirty minutes to get there in a car,” Mr. Jones said, “so we must get ready（准备好的） before eleven o’clock. Don’t be late.”
At 10:50, all of them were busy doing something, but Mrs. Jones wasn’t. She sat quietly in a chair in the garden and enjoyed the good weather.
Mr. Jones and the children were surprised, but Mrs. Jones said, “Don’t worry! Before I went to bed last night, I made all our clocks and watches twenty minutes ahead（提前）. Now we can get to the airport early.”
（
A.Because they were going to a party.
B.Because they must arrive at the airport before 11:40.
C.Because they had to go to a town.
D.Because they were going to take a taxi.
Mr. and Mrs. Jones were going on their vacation with their children, and they must arrive at the airport before 11:40 the next morning. “It takes us thirty minutes to get there in a car,” Mr. Jones said, “so we must get ready（准备好的） before eleven o’clock. Don’t be late.”
At 10:50, all of them were busy doing something, but Mrs. Jones wasn’t. She sat quietly in a chair in the garden and enjoyed the good weather.
Mr. Jones and the children were surprised, but Mrs. Jones said, “Don’t worry! Before I went to bed last night, I made all our clocks and watches twenty minutes ahead（提前）. Now we can get to the airport early.”
（
B
）21. Why did the Jones family have to be ready before eleven o’clock?A.Because they were going to a party.
B.Because they must arrive at the airport before 11:40.
C.Because they had to go to a town.
D.Because they were going to take a taxi.
答案
21.B
