Directions: Fill in the blanks by selecting suitable words from the word bank. Each word in the bank is identified by a letter. Please choose the corresponding letter for each item. You may not use any of the words more than once. In families with two working parents, father may have more impact on a child’s language development than mother, a new study suggests. Researcher __1__ 92 families from 11 child care centers before their children were a year old, interviewing each to establish income, level of education and child care arrangements. Overall, it was a group of well-class families, with married parents both living in the home. When the children were two, researchers videotape them at home in free-play sessions with both parents, __2__ all of their speech. The study will appear in the November issue of The Journal of Applied Development Psychology. The scientists measured the __3__ number of utterance( 话语 ) of the parents, the number of different words they used, the complexity of their sentences and other __4__ of their speech. On average, fathers spoke less than mothers did, but they did not differ in the length of utterances or proportion of questions asked. Finally, the researchers __5__ the children’s speech at age three, using a standardized language test. The only predictor of high scores on the test were the mother’s level of education, the __6__of child care and the number of different words the father used. The researchers are __7__ why the father’s speech, and not the mother’s, had an eddect. “it’s well __8__that the mother’s language does have an impact,” said Nadya Pancsofar, the lead author of the study. It could be that the high-functioning mothers in the study had __9__had a strong influence on their children’s speech development, Ms. Pancsofar said, “or it may be that mothers are __10__ in a way we didn’t measure in the study.” A) already B) analyzed C) aspects D) characters E) contributing F) describing G) established H) quality I) quoted J) recording K) recruited L) total M) unconscious N) unsure O) yet