Theenginehasbrokenandtheboatis______onthewater.
A、flowing
B、floating
C、drifting
D、sailing
Whenhesuddenly________upthesubjectofgeneticengineering,therewasanembarrassedsilence.
A、took
B、brought
C、showed
D、came
A、A与C相似,B与C相似
B、A与C相似,B与C不相似
C、A与C不相似,B与C相似
D、A与C不相似,B与C不相似
________withthesizeofthewholeearth,thehighestmountainsdonotseemhighatall.
A、Ifyoucompare
B、Comparethem
C、Whencompared
D、Acomparison