【单选题】My parents advise me in that river. It's dangerous.
【单选题】幂级数的收敛半径为2,则幂级数的收敛区间是()
【单选题】There are two character strings:s and t.s='My favor is computer',t=substr(s,9,5).Then the result after operation is
A.
S='My favor is computer'; t='compu';
B.
S='My favor is computer'; t='is co';
C.
S='My favor'; t='is co';
D.
S='My favor'; t='is computer';
【单选题】The students could hardly hear the speaker, _____________? [ ]
【单选题】When I have some worries, my close friends always advise me ______too much.
【单选题】There are hardly any people on the hill in winter, ______ ? [ ]
【单选题】金属晶体实际断裂强度低于理论断裂强度的原因为( )。