请帮忙作一些英语题吧，在线等待

请尽快帮忙作一些英语题吧~

D A A C A

10分数: --/1 When 1.783 is rounded to the nearest whole number, the result is how much greater than when 1.783 is rounded to the nearest tenth?
the nearest whole number:2
nearest tenth:1.8
so the answer is 0.2

11分数: --/1 Samantha is packing for a trip．Of the towels in the closet，6 are brown．She will randomly pick one of the towels to pack．If the probability is 2/5 that the towel she will pick is brown, how many towels are in the closet?
6/X=2/5
so X=15

12Five different points A，B，C，D，and E lie on a line in that order．The length of AD is 4.5 and the length of BE is 3.5．If the length of CD is 2，what is one possible value for the length of BC?
2<BC+2<3.5
2<BC+2<4.5(没用的啊)
so 0<BC<1.5

14分数: --/1 Each term of a certain sequence is greater than the term before it．The difference between any two consecutive terms in the sequence is always the same number．If the third and sixth terms of the sequence are 17 and 77，respectively，what is the eighth term?
等差递增数列 3d=77-17 d(公差)=20 a1(首项)=-37
so a8=117

15分数: --/1 |x-3|= 1/2
What is the least value of x that satisfies the equation above?
x-3=1/2or-1/2 x=7/2or5/2
so the least value of x is 5/2

16
分数: --/1 A four-digit integer, WXYZ，in which W,X,F and Z each represent a different digit, is formed according to the following rules．
1．X=W+Y+Z
2．W=Y+1
3．Z=W-5
What is the four-digit integer?
将2式、3式代入1式，得X=W+W-1+W-5
因0≤X≤9，所以2≤W≤5
又因Z=W-5≥0，所以W≥5，所以W只能等于5
得Z=0，Y=4，X=9
so the number is 5940

23分数: --/1 The four children in the Speer family are Owen, Chadd, Steph, and Daria．Chadd is neither the youngest nor the oldest．Daria is one of the two older children. Steph is the youngest child. Owen is often taken care of by his older brother and sister .Who is the oldest child?
Chadd=2 or 3, Daria=1 or 2, Steph=4, Owen=3
so Daria=1

28分数: --/1 If k=x/3 and x≠0，what does 3x equal in terms of k?
k=x/3,so x=3k≠0
so 3x=9k≠0

29A cube has 2 faces painted black and the remaining, faces painted white．The total area of the white faces is 64 square inches．What is the volume of the cube, in cubic inches?
4 white faces = 64 square inches, so 1 face = 16 square inches
边长=4 inches
so V=4*4*4=64cubic inches

1. A program designed to perform a specific task is called an application program. 正确
2.A source program is a program written in one of the high-level languages. 正确
3 A bulletin board is a public teleconferencing system that allows users to read and write messages. 正确
4. A modem is a device that converts the computer's digital bit stream into an analog signal for transmission over a telephone line. 正确
5. Control bus is a group of signal lines dedicated to the passing of control signals. 错误
6. Microprocessor chip consists of an arithmetic-logic unit, one or more working registers to store data being processed, and accumulators for storing the results of caculations. 正确
7. Our company bought three packages with very ____ specific applications: payroll, accounts receivable, and accounts payable.
C:specific
8. Both _______ and data have to be changed to machine code before the computer can operate on them.
A:instruction
9. What's the abreviation of Read Only Memory?
B:ROM
10 Which one is a group of signal lines used to send address details between the memory and the address register?
C:control bus
11. Which one is used to store numeric data during processing?
A:Microprocessor chip
12. ____is a set of instructions that make computer perform useful operations.
B：Software

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