解不等式组3x+1<x-31+x2≤1+2x3+1,并写出它的所有整数解.

题型:解答题

问题:

解不等式组
3x+1<x-3
1+x
2
≤ 
1+2x
3
+1
,并写出它的所有整数解.
考点:不等式的性质一元一次不等式组的解法
题型:解答题
计算:
(1)(π-2013)0+
12
+|
3
-2|

(2)(4
6
-4
1
2
+3
8
)÷2
2
题型:解答题

探测牙周袋深度时应使用()。
探测牙石部位时应使用()。
清除龈上牙石时应使用()。

A.牙周探针

B.尖探针

C.洁治器

D.刮治器

E.骨挫

题型:解答题

十二经之海是指()

A.督脉

B.任脉

C.冲脉

D.带脉

E.阴维脉

题型:解答题

完形填空(共10小题, 每小题2分,共20分)

根据短文内容,从A、B、C、D四个选项中选出一个能正确填入相应空格的最佳答案,并把答题卡上对应题目的答案标号涂黑。

What kind of car will we be driving in 2020? Rather different from the___31___we know today, with the next 12 years bringing greater changes than the past 60. The people who will be___32___the models of tomorrow believe that___33___problems may well increase the speed of the car’s development. Today they are students on the___34___design course at London’s Royal College of Art.

Their imagination is of a machine with three wheels instead of four, 35___powered, environmentally friendly , and able to drive itself along___36___roads equipped with built-in power supplies. Future cars will___37___their fuel during long journeys from power companies built into the road, or store it in small quantities for travelling in the street.

This view of the future car is___38___on a much more super road system, with strips built into motorways to supply power to vehicles passing along them. Cars will not need drivers, because computers will provide safe driving control and route finding. All the driver will have to do is to say where to go and the computer will do the rest. It will become___39___for cars to crash into one another. The___40___already exists for the car to become a true automobile in the future.

31. A. design           B. type                  C. colour                   D. size

32.A. studying         B. selling               C. buying                  D. designing

33. A. social            B. political              C. environmental        D. scientific

34. A. transport       B. industry             C. agriculture             D. spaceship

35. A. specially        B. chemically          C. automatically         D. electrically

36. A. modern         B. wide                   C. safe                      D. intelligent

37. A. take in          B. cut down             C. pick up                 D. gain over

38. A. based            B. built                  C. accepted               D. operated

39. A. possible          B. impossible           C. necessary            D. unnecessary

40. A. result             B. rule                   C. material                D. technology

题型:解答题

Halt_On有哪几个选项?对计算机有什么影响?

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