The first Christmas gifts were birthday gifts that __________________________________________________. A: the Virgin Mary brought to the infant Jesus B: the Mother of God brought to the infant Jesus C: the King brought to the infant Jesus D: the three Wise Men brought to the infant Jesus

Mother to infant transmission may transmit A: hepatitis A B: hepatitis B C: hepatitis C D: hepatitis D

A 12-month-old infant who is exposed to the visual cliff will ( ) A: try to climb up the cliff if the mother is at the top B: show no evidence of depth perception C: refuse to cross over the “deep” side to its mother D: eagerly cross over the “deep” side to its mother

A newborn infant had trouble breathing at birth. The infant was 3 months premature. The physicians treated the infant with a solution, which was directly injected into the lungs. Within seconds, the infant responded with much improved breathing. A major component of this solution is which one of the following?

One night after a trip from London, Mr. Allworthy found an infant in his bed. The infant was later named ______.

She gazed at the _________ infant and smiled.

The weight of a 1-year-old infant is about ?

婴儿死亡率（infant mortality）的定义是______。

Who is now attending _________ the infant A: to B: up C: with D: for

What is the head circumference when an infant is about 2 years old?