37When 1,000 children were inoculated with a certain vaccine, some developed inflammation at the site of the inoculation and some developed fever. How many of the children developed inflammation but not fever?
(1) 880 children developed neither inflammation nor fever.
(2) 20 children developed fever.
这道题答案是C,可是我认为如果把两种病都得的情况考虑得话,应该E阿
40. 3636-!-item-!-187;#058&003488
Beth's bank charges a service fee on a regular checking account for each month in which the balance on the account falls below $100 at any time during the month. Did the bank charge a service fee on Beth's regular checking account last month?
(1) During last month, a total of $1,000 was withdrawn from Beth's regular checking account.
(2) At the beginning of last month, Beth's regular checking account balance was $500.
这题答案是e, 可我认为选C,不解中,请指教。
37
两种病至少得一种的有120个。Fever得20个。
用120减掉20就是只有Inflammation而没有Fever的人数了。把图画出来就会明了很多。
40
一旦存款余额低于100的时候,收取该月服务费
上月初余额是500,然后取了1000块,我觉得吧,说明她肯定还存了点进去啊。
但是题目没有说存了多少钱,所以不知道她的余额是否低于过100。
第一题,as from (1), 120 children developed either inflammation or fever;
as from (2), 20 children developed fever
so 100 children developed inflammation but not fever.
第二题,maybe 题中意思不可透支吧。
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