(1)-2£<7 (2) 题目和参考答案——青夏教育精英家教网——

题目内容

（1）-2£

<7　　　　（2）

答案：
解析：

（1）

<x£2 （2）

£x<

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相关题目

中自变量x的取值范围是

对于0£x£100，用[x]表示不超过x的最大整数，则[x]+[

x]的不同取值的个数为( )。

Welcome to Chatsworth
Opening Time
House 11:00 a.m. Last admission (允许进入) 4:30, closes 5:30 p.m. Last entry to Scots Rooms, when open, is 4:00 p.m.
Garden 11:00 a.m. Last admission 5:00, closes 6:00 p.m.
June, July and August Garden opens at 10:30 a.m.
Admission
Adults ………………………………………………………………………£ 6.50
Senior citizens & students ………………………………………………… £ 5.25
Children …………………………………………………………………… £ 3.00
Childrenunderthree …………………………………………………………Free
Family Ticket …………………………………………………………… …£ 16.75
Car Park …………………………………………………………………… £ 1.00
Shopping
Two gift shops, with many times based on designs from the House and Garden.
Christmas shopping available at weekends from November to Christmas
Eating
Restaurant serving home made food. Bar serving drinks and cakes.
Special Events in 2003
Angling Fair weekend
8th and 9th May. One of the only fairs in the Country for game and sea fishing funs.
Flower and garden Show Weekend
26th and 27th June. The second year of this event, with flower shows and sales and gardening advice.
Guided Tours
Guided tours for children and students in English and French at an extra charge. Further details from the Booking office after 10:30 a.m.
63. When is the opening time, during summer?
A. 11:00 a.m.        B. 4:30 p.m.   C. 10:30 a.m.        D. 10:30 p.m.
64. An old person above 60 will pay ______ less than an adult.
A. £1.25         B. £ 2.25          C. £ 5.25         D. £ 6.50
65. How much is a guided tour for children?
A. It’s free     B. £10        C. I don’t know    D. £3
66. What are on sale on 26th and 27th June?
A. Fishes         B. Gardens        C. Fairs          D. Flowers
67. If you want to visit Scots Rooms, when will you get there?
A. At 10:00 a.m.    B. At 5:00 p.m.      C. Before 4:00 p.m.   D. After 6:00 p.m.

小丽驾车从甲地到乙地。设她出发第x min时的速度为y km/h，图中的折线表示她在整个驾车过程中y与x之间的函数关系。

（1）小丽驾车的最高速度是 km/h；

（2）当20£x£30时，求y与x之间的函数关系式，并求出小丽出发第22 min时的速度；

（3）如果汽车每行驶100 km耗油10 L，那么小丽驾车从甲地到乙地共耗油多少升？

对于0£x£100，用[x]表示不超过x的最大整数，则[x]+[x]的不同取值的个数为( )。

(A) 267 (B) 266 (C) 234 (D) 233 。