●Question 1. Sentence Correction

Direction: Correct the underlined part.

Using a Doppler ultrasound device, fetal heartbeats can be detected by the twelfth week of pregnancy.

A. Using a Doppler ultrasound device, fetal heartbeats can be detected by the twelfth week of pregnancy.
B. Fetal heartbeats can be detected by the twelfth week of pregnancy, using a Doppler ultrasound device.
C. Detecting fetal heartbeats by the twelfth week of pregnancy, a physician can use a Doppler ultrasound device.
D. By the twelfth week of the pregnancy, fetal heartbeats can be detected using a Doppler ultrasound device by a physician.
E. Using a Doppler ultrasound device, a physician can detect fetal heartbeats by the twelfth week of a pregnancy.


●Question 2. Critical Reasoning

In parts of South America, vitamin-A deficiency is a serious health problem, especially among children. In one region, agriculturists are attempting to improve nutrition by encouraging farmers to plant a new variety of sweet potato called SPK004 that is rich in beta-carotene, which the body converts into vitamin A. The plan has good chances of success, since sweet potato is a staple of the region’s diet and agriculture, and the varieties currently grown contain little beta-carotene.

Which of the following, if true, most strongly supports the prediction that the plan will succeed?

A. The growing conditions required by the varieties of sweet potato currently cultivated in the region are conditions in which SPK004 can flourish.
B. The flesh of SPK004 differs from that of the currently cultivated sweet potatoes in color and texture, so traditional foods would look somewhat different when prepared from SPK004.
C. There are no other varieties of sweet potato that are significantly richer in beta-carotene than SPK004 is.
D. The varieties of sweet potato currently cultivated in the region contain some important nutrients that are lacking in SPK004.
E. There are other vegetables currently grown in the region that contain more beta-carotene than the currently cultivated varieties of sweet potato do.


●Question 3. Problem Solving

Which of the following is the longest repeating decimal’s length?

A. 1/3 B. 4/9 C. 5/11 D. 3/7 E. 1/6

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●Answer to Q1: E

The structures of the answer choices A and B show that the agent of the participle phrase ‘using a Doppler ultrasound device’ is ‘fetal heartbeats’, which, however, can’t be the logical agent of the phrase. And, with its own structure, the answer choice C tells that the detection of fetal heartbeats precedes the use of a Doppler ultrasound device in terms of a sequence.

The answer choice D has a misplaced modifier ‘using a Doppler ultrasound device.’ The modifier should be placed right behind ‘a physician.’

In contrast, the answer choice E is equipped with the structure that makes the logical meaning possible in terms of the agent of ‘using a Doppler ultrasound device’ and the sequence of the actions mentioned in the sentence.


●Answer to Q2: A

Choice (A) is the correct answer because it supports one of the conditions that need to be satisfied for the success of the prediction. There could be other factors, such as the price of SPK004 seeds, the taste of SPK004 when prepared, and the conversion rate of beta-carotene into Vitamin A which could affect the outcome. Choice (A) implies that the growing condition is good enough to harvest enough SPK004 to not cause an undersupply of it.

Choice (B) questions the validity of the prediction because if foods prepared from SPK004 appear vastly different from traditional dishes then it could be detrimental to becoming a staple of the region’s diet.

Choice (C) is too extreme since SPK004 does not necessarily have to be one of the sweet potatoes that are richest in beta-carotene to solve the problem of malnutrition. SPK004 only needs to contain enough beta-carotene to help children with Vitamin-A deficiency.
If choice (D) is true, then cultivating SPK004 will not solve the problem of malnutrition since children can be exposed to deficiency in other nutrients.

Choice (E) does not support the prediction because South American children suffered from Vitamin-A deficiency in spite of availability of other vegetables with more beta-carotene. There can be multiple reasons for this such as children do not like to eat vegetables that are rich in beta-carotene or these vegetables are too expensive to become a staple diet.


●Answer to Q3: D

1/3=0.33333......
4/9=0.44444......
5/11=0.454545......
3/7=0.428571428571428571.........
1/6=0.1666666......

The correct answer is D, because its repeating decimal’s length is 6.

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