The underlined word in Paragraph 1 means______.
A．obligation
B．sleep
C．hibernation
D．vacation

未分类题According to the text, the purpose of RoboCup is to______.A．create a world ruled by robotsB．eliminate the need for human athletesC．test out artificial intelligence technologyD．for scientists to get together and have a good time

未分类题Mole rats are similar to humans in that they______.A．are virtually hairlessB．live in underground coloniesC．have opposable thumbsD．are able to kill parasites

未分类题Which of the following is the best title for the text?A．Everyone desires a good night's sleepB．A study on less sleep's jeopardyC．More sleep doesn't mean better lifeD．Less sleep, more heart disease

未分类题According to the author, technology______.A．is the key to eliminating the gap between the rich and the poorB．has led to many of society's fundamental changesC．is literateD．has caused war to be focused more heavily on nuclear confrontation

未分类题The authors attitude towards the study on architectures influence on human is______.A．confidentB．pessimisticC．unconvincingD．impracticable