肉眼能看点的恒星约有()颗。
A、1万
B、6千
C、3千
D、10万
参考答案:B
________ in his book, he didn't notice me ________ I entered the room.
A.Devoted; when
B.Absorbed; while
C.Absorbed; when
D.Devoted; while
内关(Nèiguān,PC6)手厥阴心包经;络穴;八脉交会穴(通于阴维脉)