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本人五月底考试，现在在做GWD，发现数学里面有很多答案不太准，请求答疑
数学我用的是30套，做25套的时候，错了很多，其中很多答案我很质疑，希望大家讨论讨论看看是不是有问题
Q10
The sides of a square region, measured to the
nearest centimeter, are 6 centimeters long. The
least possible value of the actual area of the
square region is
A.36.00 sq cm
B.35.00 sq cm
C.33.75 sq cm
D.30.25 sq cm
E.25.00 sq cm
答案选C,我选D
If the average (arithmetic mean) of the assessed values
of x houses is $212,000 and the average of the assessed
values of y other houses is $194,000, what is the average
of the assessed values of the x+y houses?
(1) x+y=36
(2) x=2y
A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
D. EACH statement ALONE is sufficient.
E. Statements (1) and (2) TOGETHER are NOT sufficient.
Answer:
答案是C,我选B
还有21题，因为有图放这里不方便，如果大家愿意的话去找下GWD25数学，看下这道题，我实在是没看明白。
23.At a fruit stand yesterday, the price of each apple was $0.10 more than the price of each orange. What was the total revenue from the sale of oranges at the fruit stand yesterday?
(1) The number of oranges sold at the fruit stand
yesterday was 5 more than the number of
apples.
(2) The total revenue from the sale of apples
at the fruit stand yesterday was $15.00
Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient
? Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient
? BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
? EACH statement ALONE is sufficient
? Statements (1) and (2) TOGETHER are NOT sufficient
答案是C,我选E
31.是到图形题，我觉得答案也有问题，求解释，我选B,答案是D
32.Last year in a group of 30 businesses, 21 reported a net profit and
15 had investments in foreign markets. How many of the businesses
did not report a net profit nor invest in foreign markets last year?
(1) last year 12 of the 30 businesses
reported a net profit and had invest-
ments in foreign markets.
(2) last year 24 of the 30 businesses
reported a net profit or invested in
foreign markets, or both.
Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient
? Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient
? BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
? EACH statement ALONE is sufficient
? Statements (1) and (2) TOGETHER are NOT sufficient
答案是B，我选D
这道题错了好多，我数学一直都很好的，这个打击有点大。
今天做了GWD1，数学错了2个，这个还是比较正常的，不过其中有一道，感觉答案有问题，希望xdjm能帮忙看看
Q30:
Joanna bought only $0.15 stamps and $0.29 stamps. How many $0.15 stamps did she buy?
(1) She bought $4.40 worth of stamps.
(2) She bought an equal number of $0.15 stamps and $0.29 stamps.
A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
D. EACH statement ALONE is sufficient.
E. Statements (1) and (2) TOGETHER are NOT sufficient.
我选A,答案是D,我不知道答案是怎么单从第二个条件求出来的。 |
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发表于 2011-5-4 21:34:24
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