[填空题]Many fishes are able to alter their coloration only to camouflage themselves.

[单项选择]There were many people present and he appeared only for a few seconds, so I only caught a （　）of him.
A. glance
B. glimpse
C. look
D. sight

[单项选择]Not long ago, many people believed that babies only wanted food and to be kept warm and dry. Some people thought babies were not able to learn things (67) they were five or six months old. (68) doctors in the United States say babies begin learning (69) their first day of life. Research scientists note that babies are (70) influenced by their environment. A baby learns to get the best care (71) by smiling to please her mother or other caregiver. This is (72) babies learn to connect and communicate with other people.
The American researchers say this ability to learn exists in a baby (73) before birth. They say newborn babies can (74) and understand sounds they heard while they were still (75) inside their mothers.
Many experts say the first years of a child’s life are important for all (76) development. An American study shows how mothers can influence (77) development and langu