Homingpigeonisusefulasa______carrierbecausewhentakenfromhome,itwillreturnatthefirstopportunity.
A、meaning
B、information
C、message
D、content
A、两眼上翻，前囟门隆起
B、极度呼吸困难，烦躁
C、心率增快，＞16-180次/分
D、肝脏增大
Manypatientsinsistonhavingwatcheswiththeminhospital,______theyhavenoschedulestokeep.
A、since
B、eventhough
C、so
D、asif
Iknowmylimitations,soIwon’tdoanything______myability.
A、beyond
B、under
C、above
D、below
Hewasvery_____togo，buthehadnochoice.
A、ready
B、willing
C、reluctant
D、hesitant