题目内容

根据下表提供的信息回答问题。
实际产量最大的是哪种产品？()

A. 氢氧化铝
B. 普通铝锭
C. 拉丝铝
D. 稀土铝

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指数平滑法就是把每期资料的重要性用一个权数来代表，然后求出每期资料与对应的权数乘积之和。 ()

A. 正确
B. 错误

听力原文：W: Hey! The train is late! I've been waiting her for ages.
M: Which train, madam？
W: The 8:18 to Baker Street.
M: The 8:187 I'm afraid you've made a mistake, madam.
W: A mistake？ My timetable says: Baker Street train—8:18.
M: Oh, no, madam. The Baker Street train leaves at 8: 08.
W: At 8:08？
M: You see, madam. They changed the timetable at the end of April.
W: Changed it？ May I see the new timetable？ What does it say？
M: It says: Baker Street train—8:08.
W: Hm! So the train isn't late. I'm late.
(13)

A. Because the train was late.
Because the train was canceled.
C. Because she didn't know the timetable was changed.
D. Because she was late.

听力原文：W: Good morning, I am calling to inquire about your book shelves.
M: Yes , what would you like to know？
W: Well, I'd like to check the size first.
M: The standard point is 3.2 meters wide, 1.8 meters tall and 30 centimeters deep.
W: Thanks. That is the dimensions I need.' How about the colors？
M: We have 4 colors, white, black, brown and grey.
W: I think brown is OK, what about the charge of the delivery？
M: Well it depends on how far you are from our factory？
W: We are about 5 miles from your factory.
M: I see. That is our free delivery area.
Q6. What decides whether the woman chooses？
(15)

A. The discount.
B. The weight.
C. The size.
D. The distance.

如右图，它是由15个同样大小的正方形组成。如果这个图形的面积是375平方厘米，那么，它的周长是()。

A. 150
B. 155
C. 160
D. 165