16. The passage mentions all of the following as ways adults modify their speech when talking to babies EXCEPT
(A) giving all words equal emphasis
(B) speaking with shorter sentences
(C) speaking more loudly than normal
(D) using meaningless sounds

12. Why does the author mention syllables pronounced with rising and falling inflections in lines 7-8 ? (A) To demonstrate how difficult it is for babies to interpret emotions (B) To illustrate that a six-week-old baby can already distinguish some language differences (C) To provide an example of ways adults speak to babies (D) To give a reason for babies' difficulty in distinguishing one adult from another

13. The word "diverse" in line 14 is closest in meaning to (A) surrounding (B) divided (C) different (D) stimulating

14.. The word"noted" in line 17 is closest in meaning to (A) theorized (B) requested (C) disagreed (D) observed

15. The word "They" in line 18 refers to (A) mothers (B) investigators (C) babies (D) words

17. The word "emphasize" in line 19 is closest in meaning to (A) stress (B) repeat (C) explain (D) leave out

18. Which of the following can be inferred about the findings described in paragraph 2 ? (A) Babies who are exposed to more than one language can speak earlier than babies exposed to a single language. (B) Mothers from different cultures speak to their babies in similar ways. (C) Babies ignore facial expressions in comprehending aural language. (D) The mothers observed by the researchers were consciously teaching their babies to speak.

19. What point does the author make to illustrate that babies are born with the ability to acquire language? (A) Babies begin to understand words in songs. (B) Babies exaggerate their own sounds and expressions. (C) Babies are more sensitive to sounds than are adults. (D) Babies notice even minor differences between speech sounds.

20. According to the author, why do babies listen to songs and stories, even though they cannot understand them? (A) They understand the rhythm. (B) They enjoy the sound. (C) They can remember them easily. (D) They focus on the meaning of their parents' words.

21. The author's main point in paragraph 1 is that clay deposits (A) conceal layers of rock (B) can be found in various places (C) are usually small (D) must be removed from construction sites

22. It can be inferred from the passage that clay is LEAST likely to be plentiful in which of the following areas? (A) In desert sand dunes (B) In forests (C) On hillsides (D) Near rivers